The Ismaili dais in search of a new residence for their Imam came to Salamia and inspected the town and approached the owner, Muhammad bin Abdullah bin Saleh, who had transformed the town into a flourishing commercial centre. They told him that there was a Hashimite merchant from Basra who was desirous of settling in the town. He readily accepted and pointed out to them a site along the main street in the market, where existed a house belonging to a certain Abu Farha. The Ismaili dais bought it for their Imam and informed him about it. Wafi Ahmad arrived to his new residence as an ordinary merchant. He soon pulled down the old building and had new ones built in its place; and also built a new wall around it. He also built a tunnel inside his house, leading to the desert, whose length was about 12 miles. Money and treasures were carried on camels to the door of that tunnel at night. The door opened and the camels entered with their loads inside the house.

Salamia was a small town in Syria in the district of east of the Orontes, and is located at a distance of 32 kilometers to the south- east of Hammah, or 44 kilometers to the north-east of Hims. It lies in a fertile plain, about 1500 feet above the sea level, south of the Jabal al-A'la and on the margin of the Syrian steppe, standing on the main entrance of the Syrian desert.

It is an ancient Salamias or Salaminias of the Greek, which flourished in the Christian period. According to Yaqut in 'Mudjam' (3rd vol., p. 123), the town was originally called Salam-miyyah (a hundred safe) after the hundred surviving inhabitants of the destroyed town of al-Mutafika, who migrated to this town, which they built and the expression was changed with the years until it became Salamia. There is a foundation inscription of a mosque on a stone at the entrance to the citadel, dating 150/767 founded by the local Hashimites and was destroyed by the Qarmatians in 290/902. It will be perhaps appropriate to say that the modern Salamia in Syria was prospered by the Ismailis. According to 'The Encyclopaedia of Islam' (Leiden, 1995, 8th vol., p. 921), 'The fact that Salamiyya was the centre of an important branch of the Hashimids and the isolated position of the town perhaps account for its important role in the early history of the Ismaili movement as the secret headquarters of the pre-Fatimid Ismaili dawa.'

The adherents and dais began to rush privily to Salamia. Like in Nishapur, Wafi Ahmad was also known locally as attar (druggist) in Salamia.

The word satr (pl. satur) is derived from astar, meaning hide, cover or shield. As it is said, masatra (he concealed enmity), or tastir(to hold within a curtain). According to 'Arabic-English Lexicon' (New York, 1872, 4th vol., p. 1304) by Edward William Lane, the word satr means to veil, conceal or hide a thing. The early Ismailis had employed the term satr with regards to those periods in their history when the Imams were hidden from the eyes of their followers. When the animosity of their enemies reached to its extreme, the Ismaili Imams had to hide themeselves to elude discovery. On that juncture, the hujjats represented the Imams in the community. Thus, the hujjat was himself a living proof, acting as the custodian until the time of the Imam's reappearance. This period is called Dawr-i Satr (period of concealment) in Ismaili history. In contrast, the period following the concealment is known as an unveiling (Dawr-i Kashf), or the period of manifestation (Dawr-i Zuhur), when the Imams publicly made their appearance.
With the death of Jafar Sadik in 148/765, Ismail (d. 158/775) and Muhammad (d. 197/813), the gravity of brutal persecutions of the Abbasids had considerably increased. The Abbasids left no chance to grind the Ismailis under the millstone of cruelty. The Ismaili Imams were impelled to thicken their hiding, therefore, the first Dawr-i Satr came into force from 197/813 to 268/882, wherein the Imams were known as al-A'immatu'l masturin i.e., the concealed Imams. Achilles des Souza writes in 'Mediation in Islam - an Investigation' (Rome, 1975, p. 35) that, 'For the first century and a half after the death of Ismail, the Ismaili Imams remained hidden and little is known. This period could be characterised, as we have seen earlier, as the period of the quietists.'

And here we cannot but call attention to a fact that the doctrine of ghayba among the Twelvers should not be confounded with that of the concept of satr among the Ismailis. Seyyed Hossain Nasr writes in this context in his 'Ideals and Realities of Islam' (London, 1966, p. 159) that, 'The idea of being hidden (mastur) must no, however, be confused with the occultation (ghayba) of the twelfth Imam (of the Twelvers). The first implies simply being hidden from the eyes of the crowd and from public notice, while the second means disappearance from the physical world.'

Idris Imaduddin (d. 872/1468) writes in 'Zahru'l-ma'ani' (p. 59) that, 'He (Wafi Ahmad) was the first of the three concealed Imams by the order of God and His inspiration.' Hamiduddin Kirmani (d. 412/1021) also admits in his 'ar-Risalat al-Wai'za' (comp. 408/1017) that, 'Muhammad bin Ismail became qaim, and after him, the concealed Imams (aima'i masturin) succeeded to the Imamate, who remained hidden on account of the persecution of the tyrants, and these were three Imams, viz., Abdullah, Ahmad and Hussain.' Hatim bin Imran bin Zuhra (d. 498/1104) writes in 'al-Usul wa'l Ahakam' that, 'When Muhammad bin Ismail died, his authority passed to his son, Abdullah bin Muhammad, the hidden one, who was the first to hide himself from his contemporary adversaries.' According to Hasan bin Nuh Broachi (d. 939/1533) in 'Kitab al-Azhar' (comp. 931/1525) that, 'The three hidden Imams were Abdullah bin Muhammad, Ahmad bin Abdullah, surnamed at-Taqi and Hussain bin Ahmad.' The fact that the Dawr-i Satr virtually came into force in the time of Wafi Ahmad has been also asserted by the modern scholars, such as W.Ivanow, Dr. Sami Nassib Makarem, Sir Johj Glubb, Husayn F. al-Hamdani, etc.

Shahrastani (1076-1153) writes in 'Kitab al-milal wa'l nihal' (p. 164) that, 'Then begins the era of the hidden Imams, who went about secretly but sent out emissaries, who appeared openly on their behalf. They hold that the world can never be without an Imam who is alive and a qaim, either visible and manifest, or hidden and concealed. When the Imam is manifest it is possible for his hujjat (proof) to be hidden, but if the Imam is hidden it is necessary for his hujjat and emissaries to be manifest.'

On account of the strictness of Imam's concealment, when his hujjats were accepting on his behalf the oath of allegiance from neophytes, they used to tell them that they should obey the Lord of the Time (Sahib al-Asr or Waliyul Asr) without pronouncing the name of the Imam. This practice was in use among the neophytes through the whole period of the concealment of the Imams.

Summing up the condition of the hidden Imams in the veiled period, Ibn Khaldun writes in his 'Muqaddimah' (1st vol., pp. 44-5) that, 'These people (Imams) were constantly on the move because of the suspicions various governments had concerning them. They were kept under observation by the tyrants, because their partisans were numerous and their propaganda had spread far and wide. Time after time they had to leave the places where they had settled. Their men, therefore, took refuge in hiding, and their (identity) was hardly known, as the poet says: `If you would ask the days what my name is, they would not know, and where I am, they would not know where I am.''

Wafi Ahmad settled in Nihawand, and betrothed to Amina, daughter of Hamdan, son of Mansur bin Jowshan, who was from Kazirun. By this wife, the Imam had a son, Ali bin Abdullah, surnamed al-Layth, and a daughter, Fatima. The brother of Wafi Ahmad also married here and had a posterity.

Meanwhile, the Abbasids intensified their operations, thus Wafi Ahmad made his son as the chief of the Ismaili mission, and himself went from the knowledge of the people, so that none of his followers and other knew where he was. It is however known from the fragment of the traditions that he had gone to Syria and lived in the castle of Masiyaf for some time

It is worth mentioning that the Sunni historians had no basic idea of the Shiite concept of Imamate and arrayed hostility with the Ismailis in the light of their own sense of propriety. They championed in dressing up the baseless stories in their notion, and then used it a tool to defile Ismailism in aggressive and hyperbolic words. Under such derogatory attitude, Muhammad bin Ismail is accused of claiming the prophethood and abolishing the Shariah of the Prophet.
The institution of the Imamate is a cornerstone and paramount position in Ismaili tariqah, and according to their theory, the seven millennial periods (adwar'i azam) form a part of a great cycle of 360,000 years. At its end, during the last period of 7000 years, there were six natiqs (speakers, pronouncers or law-givers), viz. Adam, Noah, Abraham, Moses, Jesus and Muhammad, the last Prophet. They are the seven law-givers. Each great period is started by the introduction of a new religion. This religion, exercising great influence upon mankind at the outset, but lost its original force with the passage of time. It is ultimately replaced by a new system to retain its originality and make it forceful then onwards. Each natiq lays down the Shariah for his period, and appoints an asas (base, foundation or executor). The asas lays the foundation of hidden knowledge (ilm al-batin), who is also called wasi, organizing the dissemination of the hidden knowledge among the faithfuls only. The asas is followed by a chain of Imams, who stimulate the mission on the basis of hidden teachings. The period (dawr) of one natiq comprises six ones and the seventh one becomes another natiq, who either proclaims another Shariah setting aside the earlier one, or cancelling (tatil al-shariah) its manifestation, and gives it a new interpretation on the ground of hidden secrets (asrar'i batin). The Prophet Muhammad was preceded by five natiqs, each natiq had cancelled his predecessor's Shariah. With this cycle, the Prophet stands as the sixth natiq who appointed his son-in-law Ali as his wasi, and there followed after him six Imams, bringing the Prophet's period (dawr) to a close. The seventh Imam, Muhammad bin Ismail was the seventh natiq in the new heptad. Muhammad Bakir Majlisi quotes a Hadith in his 'Biharu'l Anwar' (13th vol., p. 156) that, 'The next expected (natiq) Imam would be 'the son of six' (ibn sitta), means the next natiq would be preceded by six Imams.' Since there was no Shariahafter the Prophet, Muhammad bin Ismail was not to announce a new religious law. Instead, he would reveal the esoteric truths concealed behind all the preceding messages. He abrogated the adulterated parts of the Shariah by explaining the hidden meaning of the true Shariah and revealing its purpose. The Islamic Shariah had lost much of its pristine purity, and many unhealthy practices crept into the religion, therefore, the tawil was applied to protect its dynamic force.

Abrogation of the Shariah, therefore, by every seventh natiq encompasses the meaning of the law only, not its exoteric or practical and ritualistic aspects. The Prophet was ar-Rasulu'n-Natiq, whereas Muhammad bin Ismail was al-Imamu'n-Natiq. The former was the natiq in the capacity of the Prophethood, and the latter was the natiq in the role of Imamate. Thus, Muhammad bin Ismail had never repudiated or suspended the Shariah for his followers. Arif Tamir writes in 'al-Qaramita' (pp. 86-87) that, 'The Imamate of Muhammad bin Ismail was the beginning of a new era in the history of the Ismaili movement. We go even further to say that he came with some new teachings, setting aside some exoteric teachings which preceded. He was in fact the first Imam to have done away with the trouble of manifestation and gave call for tawil and esoteric meaning, and for spreading his mission, he relied on his hujjat and great dai, Maymun al-Qaddah.' Idris Imaduddin (d. 872/1468) writes in 'Zahru'l-ma'ani' that, 'Muhammad bin Ismail was named the seventh natiq, because he rose to preach by the command of God, incorporating in himself all the virtues which are to be crowned in him. He is neither the Revealer of the final religion, nor the Apostle of God, but he is in a class by himself, of a unique rank.'

It must be noted that the period of Muhammad bin Ismail was a turning point in the history of the Ismaili mission. The Abbasids revolution had been consolidated, and the Iranian influence in particular and Greek influence in general were being applied in the intellectual field. In a century that followed, the wave of Muslim conquest reached upto Samarkand, beyond the Oxus. With the extension of Muslim territory, there cropped up a number of new problems neither contained in Koran, nor anticipated by the Prophet. Hundreds of schools of jurisprudence appeared to mould the Muslim system of laws, but none could crystallize into definite system, acceptable by all. 'Some five hundred schools of jurisprudence' writes Adam Mez in 'The Renaissance of Islam' (London, 1937, p. 212), 'are said to have disappeared at or about the beginning of the 3rd/9th century.'

The Schools of Law represented by Abu Hanifah (d. 150/767), Malik bin Anas (d. 179/795), al-Shafi (d. 204/819) and Ahmad bin Hanbal (d. 241/855) also emerged prominently in this period. The major collections of Hadiths also were done mainly by Bukhari (d. 256/870) and Muslim bin al-Hajjaj (d. 261/875).

The problem however was to find a correct balance among all these developments when the Islamic world was undergoing radical changes. Islam had to keep pace with, and adjust to, the fast changing world and the growing of new trend. Muhammad bin Ismail had to impart the true Islamic teachings through tawil (the allegorical interpretation) based on reason to his followers. It was thus absolutely a false propaganda of the historians that Muhammad bin Ismail - he being the seventh natiq had claimed for his apostleship or cancelled the Shariah of the Prophet. P.J. Vatikiotis writes in 'The Fatimid Theory of State' (Lahore, 1957, p. 90) that, 'Abrogation of the Shariahby every Seventh natiq, as for example Muhammad b. Ismail, encompasses the meaning of the law only, not its zahir or practical and ritualistic aspect. Muhammad b. Ismail did not abolish anything of the formal worship and law of the Shariah; on the contrary, he strengthened it, and ordered everyone to act according to it. What Imam al-Muizz meant by the expression al-shariah uttilat, or the Shariah of Muhammad was purified by his mission, refers to his explaining its meaning and clarifying its hidden points. Tatil of Shariah, then, means its purification through tawil. A revelation of the external truths behind the Shariah to the closest initiates in the dawa constitutes Fatimid abrogation of law. It is not an abrogation that overthrows accepted legal ritual in the Quran, but rather the reconciliation of such law with religious philosophy.'

It should also be known that the mis-interpretation of the theory of Muhammad bin Ismail as the Seventh natiq by the Sunni historians had engendered the coinage of the name 'Seveners' (sabiya) for the Ismailis, which is a glaring instance, sounding their misconception in the Ismaili belief of Imamate. The Muslim knowledge of the Ismailis in the field of tawil had not progressed much beyond what they had transmitted on the subject. They knew little and broadcast more, and the field therefore continued to be dominated by the fanciful impressions and fictitious hodgepodge.

Most of the adherents of Ismaili faith during the period under review are hardly known due to the practice of taqiya. But, the Ismaili dais had best records of it, who became the source of informations for the later Ismaili authorities. Among the secret followers, the name of Zubaida, the wife of caliph Harun ar-Rashid is a significant. She was the daughter of the Abbasid caliph Mansur's elder son, Jafar; and her mother was Salsal, the sister of Harun ar-Rashid's own mother, named Khaizuran. Zubaida was thus the cousin of Harun ar-Rashid, and professed batini tariqah of the Ismailis secretly. Her marriage with Harun ar-Rashid took place in 164/781. Zubaida, in middle life, built herself a palace of her own, surrounded by a very large garden. She had employed a large staff of secretaries and agents to manage the properties she had acquired in all over the empire. She also undertook projects for the digging of canals for irrigation and water supply. She was famous for the extensive engineering works which she had carried out in Mecca, to bring water sufficient for the increasing number of pilgrims. One of the most of her projects was the improvement of the pilgrim road across 900 miles of desert from Kufa to Medina and Mecca, which still in south Kufa is known as Darb Zubaida. She died in 226/841, about 32 years after her husband's death. It appears that she advocated Ismaili faith before her marriage in 164/781 and used to inform Imam Muhammad bin Ismail in advance the measures of Harun ar-Rashid through her trusted agents. It also appears that her close link with the Imam had ceased after the death of Muhammad bin Ismail.
According to 'Zahru'l-ma'ani', 'Muhammad spread religious knowledge, explained esoteric doctrines, and revealed to the chosen ones the great mystery, so much of these as never was revealed by any Imam before him.'

Some sources state that after the massacre of Abul Khattab and his followers in Kufa, the remnants joined al-Mubarakiyya, and that out of this union arose a group who preached that Muhammad bin Ismail was the last Imam, anticipating his return. It was however this group who was the predecessors of the later Qarmatians, who refused to accept the death of Muhammad bin Ismail, who, according to them remained alive and would return in the imminent future as the promised Mahdi or Qaim. The main loyalist branch of Ismailism however traced the Imamate in the progeny of Muhammad bin Ismail.

The period of Muhammad bin Ismail also saw an early growth of the Sufism in Islam. The eminent Sufis who flourished in the period under review were Hasan Basri (d. 110/728), Ibrahim bin Adham (d. 160/776), Abu Hashim Kufi (d. 160/775-6), Rabia Basri (d. 185/801), Shaqiq Balkhi (d. 194/810), etc.

The word dawa (pl. du'at) is derived from du'a means to call, invite or summon, and thus the term dai denotes, 'he who summons', whose corresponding term in English is 'missionary' (derived from the Latin, mittere). The word dawa is also used in the sense of prayers, such as dawat al-mazlum (prayer of the oppressed), or dawa bi'l shifa (prayer of the health). The word dawat virtually originated in the time of Imam Jafar Sadik, and Abdullah bin Maymun had founded the Ismaili dawa organisation in Basra.
T.W. Arnold writes in 'The Preaching of Islam' (Aligarh, 1896, p. 277) that, 'The Ismailis were the master of organisation and tactics at the time of Abdullah bin Maymun.' W. Ivanow writes in 'Collectanea' (Holland, 1948, p. 20) that, 'The only branch of Islam in which the preaching of religion, dawat, was not only organised but even considered of special importance, was Ismailism.' According to 'The Encyclopaedia of Islam' (Leiden, 1965, 2nd vol., p. 168), 'The word dawat is well known as applied to the wide-spread Ismaili propaganda movement, appealing to Muslims to give their allegiance to an Imam descended from Ismail bin Jafar Sadik.'

Soon afterwards, Salamia became the headquarters of Ismaili dawat after Basra, while Yamen later on became the dai generating hub. Indeed, very little is known about the actual mission (dawa) system of early Ismailism, but it is however certain that the Ismaili mission was brisk and pervasive throughout the Islamic regions. In the broadest terms, it seems that Muhammad bin Ismail was represented by twelve hujjats in different regions, and beneath the hujjats, a hierarchy of missionaries (dais) conducted the different tasks of initiation and instruction. The Ismaili dais stimulated a network of the mission in many parts of the Abbasid empire and there was plenty of its activity even outside it. They fully exploited the socio-economic conditions of the weaker sections of society to attract them towards the mission on one hand, and the philosophical interpretations of the teachings of Islam to attract the thinking sections of the society on the other.

For purposes of mission, the world was divided into twelve parts, each being called jazira (usually translated as an island), known as the island of the earth (jazira al-arad). It is difficult to say whether jazira really meant an island. One can broadly agree with W.Ivanow when he says: 'It appears that in this sense jazira does not mean the island, as it usually means, but is taken here in its basic sense, from the root j-z-r = to cut off, and therefore means a slice, cutting, or a part, a section. Therefore the expression 12 jazair should be translated as the 12 sections of the world population. They are: Arabs, Turks, Berbars, Negroes, Abyssinians, Khazras, China, Daylam, Rum and Saqaliba. Thus this classification is partly based on geographical, and partly on ethnographical principle, and plainly belongs to the fourth/tenth century.' (vide 'The Rise of the Fatimids', Calcutta, 1942, p. 21)

It is related that Muhammad was traced out on one day in Sarha by the Abbasid agent, named Muhammad bin Ali al-Khorasani, who surprised the Imam in a mosque. He was greatly impressed to behold the Imam, and lost courage to arrest him, and permitted the Imam to escape. Thence, Muhammad went to Azar in Khuzistan, a province of south-western Iran. It was bounded on the west by the Iran-Iraq border; on the north by Luristan, on the south by the Persian Gulf; and on the east by the river Hindiyan. Muhammad thence proceeded to Shapur. Disguised as a merchant, he stayed in Shapur with a certain Qamas bin Nuh, whose daughter Rabta, he married. Shapur (Arabic Sabur), the Shapurgird of Firdusi; became an unscathed place for the Imam for some times.

Muhammad selected Hurmuz as a chief dai of the mission, and then had made his footing at the fortified city of Nihawand, where he stayed with the governor, Mansur bin Jowshan, who had close ties with Ishaq bin al-Abbas. He allotted the Imam a piece of land in the district of Sarha, where he led a peaceful living.
Nihawand was a town, lying about forty miles south of old province of Hamdan. It lies on the southern road, which coming from Kirmanshah, leads into Ispahan. The district of Nihawand was formerly called Mah-Bahrajan or Maha-Dinar. Among the products of Nihawand the Arab historians mention willow-wood which was used for polo-sticks (sawalija), aromatic reeds (kasbat al-dharira) to be used for hanut (a kind of perfume).

Ishaq bin al-Abbas al-Farsi, the Abbasid governor of Ray privily professed Ismaili doctrines. Muhammad betrothed to Fatima, the daughter of Sarah, sister of Ishaq bin al-Abbas; who gave birth to a son, who was named Abdullah, also known as Wafi Ahmad. When the news of Muhammad bin Ismail's stay at Ray reached the ears of Harun ar-Rashid, he wrote to Ishaq bin al-Abbas, ordering to arrest Muhammad and send him to Baghdad. Upon receipt of caliph's letter, he showed it to the Imam and replied to the caliph that he found no trace of Muhammad, and would send as soon as he was arrested, and thus he tried to put the caliph off the scent. But the spies planted by Baghdad were vigilants and reported to the caliph that Muhammad bin Ismail not only was living at governor's house, but that he was directing his mission from there. Upon this, the caliph wrote another letter to Ishaq bin al-Abbas, impugning him to come in person with his forces if his orders were not obeyed forthwith. The governor however made his usual reply.
Meanwhile, the complaints about Ali bin Musa bin Mahan, the governor of Khorasan reached the point where Harun ar-Rashid could no longer ignore them. With the intention of deposing his governor and to make a search of the Ismaili Imam, Harun ar-Rashid adopted a militant stance. In 189/805, he marched towards Ray with a detachment of his army, and after searching for the Imam through a tracking party, ordered the arrest and torture of Ishaq bin al-Abbas. He however did not give away any clue of the whereabouts of the Imam. Ishaq died as a result of severe and cruel torture that was inflicted upon him, and was rigorously flogged till death. He did not waver and stood firm in spite of excruciating tortures. In spite of the gloomy situation, however, his faith remained unshakable.

Admittedly, it is learnt that after leaving Medina, Muhammad bin Ismail made his way towards Iran and Syria accompanied by Maymun al- Qaddah. The bitterest of the Abbasids' enmity was daily growing in intensity. Apprehending lest the enemies should resort to some violent measures against him, Muhammad assumed the name of Maymun al-Qaddah to elude discovery. Thus, the name Maymun al-Qaddah came to be used by two characters at one time. It was also resolved, if the real identity of the Imam be traced, Maymun al-Qaddah was to come forward as Muhammad bin Ismail to sacrifice his own life in order to protect the line of Imamate from extinction.
Henceforward, Muhammad bin Ismail had also a sobriquet of Maymun al-Qaddah to conceal his identity. In fact, Maymun al-Qaddah had a son, named Abdullah (d. 260/874), while Muhammad bin Ismail had also a son at the same time, called Abdullah (d. 212/828), surnamed al-Wafi Ahmad. With the passage of time, Muhammad became known as Maymun al-Qaddah in the places he resided, while Maymun al-Qaddah was treated as Muhammad bin Ismail in the regions he propagated Ismailism. Abdullah, the son of Maymun al-Qaddah was consequently considered as the son of Muhammad bin Ismail in the regions where the Imam had assumed the title of al-Qaddah. It therefore gave rise to the contrivance of a story that Abdullah (al-Wafi Ahmad) was the son of Maymun al-Qaddah on one hand, and Abdullah (bin Maymun al-Qaddah) was the son of Muhammad bin Ismail on other. Later on, it became an instrument for the anti-Fatimid propagandists, notably Ibn Razzam to join the lineage of the Fatimid Imams with that of Abdullah bin Maymun al-Qaddah instead of Abdullah (al-Wafi Ahmad) bin Muhammad bin Ismail. This is known as Qaddahid theory and became a weapon of the later Abbasids to discredit the Fatimid origin in 401/1010.

In the face of these facts, the Ismaili Imams had assumed the titles of the dais in one or more time during the veiled period, which is also sounded expressly in the letter of the Fatimid Imam al-Muizz (341-365/953-975), written in 354/965, addressing to his dai in Sind, called Jaylam bin Shayban. This important letter is well preserved by Idris Imaduddin (d. 872/1468) in the 5th volume of 'Uyun'l-Akhbar'(comp. 842/1438). It reads:- '.... These people have arbitrarily limited (the period of Imamate) by (the death of) Muhammad bin Ismail; and when he died, they said about him all what was said by them. They (also) thought that he entrusted the Imamate to some one who was not his son. And that his successor (similarly) entrusted the Imamate (to his own) successors, whose number has (also) reached the number of seven. They thought that the first (of these pseudo-Imams) was Abdullah bin Maymun al-Qaddah. All this is preached in order to prove their theory that there was no Imam after him (i.e., Muhammad bin Ismail), and that those who succeeded him were ordinary people. Thus they have cut what God ordered to be continuing (the line of Imams), opposing the command of God, given in the Koran (47:27). '....and We have made a word to remain after him.' The cause of this requires explanation. When the preaching in favour of Muhammad bin Ismail has spread, the Abbasid usurpers tried to lay their hands upon him, i.e. the person whose rights were claimed. Therefore (he and other) Imams went into concealment. Their dais used to refer to them under allegorical names, in accordance with the principle of taqiya, alluding to what they possessed and what was appropriate to them. They used to say, for instance, that the Imam, the son of Muhammad bin Ismail was Abdullah. And this was true. And with regard to his being the son of Maymun al-Qaddah, it was true that he was the son of Maymunu'n naqibat, i.e. of the 'Divinely blessed with success in his affairs,' of al-Qaddah (the flint) 'striking the sparks of guidance', i.e. 'lighing the light of the Divine wisdom'. Similar allegorical expressions were applied also to other Imams after him, at their own orders and instructions given to their dais. When such allegorical expressions reached those who know nothing about their real implications, and only took them literally, as we mentioned above, they fell into an error, and made others err after them, straying from the straight path. But if they would only do what God has ordered them to do, rallying around the Imams, they surely would know those who were otherwise hidden from them. Just as you know them now. But the blind, who has no one to lead him, or a stick in his hand, falls into an abyss from which no one can save him. The self-conceited fall into sin and error. So beware of thinking that God ever abandons humanity to itself. No, He does not abandon them even for a moment, leaving them without an Imam from the descendants of the Prophet. And the Imams can come to their office only by the commandments relating to Imamate....'

In addition, Hatim bin Imran bin Zuhra (d. 498/1104) writes in his 'al-Usul wa'l-Ahkam' that, 'The dais used their own names as nick-names for the Imams in order to protect them from persecution; some people were misled by this to such a degree that they said that the Imam, descendant of Muhammad bin Ismail was Abdullah bin Maymun al-Qaddah.' According to Arif Tamir in 'al-Qaramita' (p. 87), 'When Muhammad bin Ismail fled from the east and established in Palmyra in Syria, the centers of his activities; he called himself Maymun al-Qaddah.' Syed Abid Ali Abid writes in 'Political Theory of the Shiites' (cf. 'A History of Muslim Philosophy', ed. by M.M. Sharif, Germany, 1963, 1st. vol., p. 740) that, 'As a matter of fact, as the latest research has established beyond any doubt, Maimun was the name adopted by Imam Muhammad when he went into concealment. In other words, during the period of concealment those who were in his confidence knew Imam Muhammad to be a Maimun.' Husayn F. al-Hamdani (1901-1962) writes in his 'On the Genealogy of Fatimid Caliphs'(Cairo, 1958, p. 18) that, 'It is likely that Muhammad b. Ismail, who did not, and could not, according to accounts, live a settled life at one place, went underground during his wanderings by assuming the name of Maymun.'

Before biding goodbye to his ancestral abode, Medina, Muhammad had secretly convened an assembly of his dais, inviting them from all the regions. When caliph Harun ar-Rashid came to know the secret assembly, he resolved to arrest Muhammad bin Ismail in Medina. In the meantime, Zubeda, the wife of Harun ar-Rashid and a secret follower of the Imam, managed to send her trusted servant towards the Imam in Medina, informing him the plan of the caliph. Thus, Muhammad bin Ismail had to make his footing out of Medina at once.

Tradition however has it that Muhammad first went to southern Iraq, where he acquired the epithet of al-maktum (veiled one), and then at Nishapur in disguise, where he lodged for some times. Nishapur was one of the most important of the four great cities of Khorasan. The word 'Nishapur' is derived from New-Shapur. In Armenian it is called Niu-Shapuh, then became Nishwpur, finally Nishapur. It is situated on the east side of a plain surrounded by hills. To the north and east of the town lies the ridge of Binalud-Kuh, which separates it from the valley of Mashhad and Tus. It was divided into 42 wards, 1 farsakh in length and breath. Muhammad afterwards proceeded towards Ray (the ancient Ragha), a town in Media, about 15 miles from Tehran. Ray was situated in the fertile zone which lies between the mountains and the desert. The Abbasids rebuilt and surrounded it by a ditch. Harun ar-Rashid was also born in Ray and used often to recall with pleasure his native town. In 195/810, caliph Mamun's general Tahir bin Hussain won a victory over caliph Amin's troops near Ray.

Ismail lived for the most part in Salamia, where he died after bequeathing the office of Imamate to his son Muhammad. According to 'al- Usul wa'l Ahakam' by Hatim bin Imran bin Zuhra (d. 498/1104) that, 'Ismail had sent his dais to all parts and ordered him (Muhammad) to administer the oath in his name according to the custom of all preceding Imams. When his death drew near, he appointed as his heir, his son Muhammad who showed great perfection.'
The predeseased tradition assigns Ismail's death in 145/762, but 'Dustur al-Munajjimin' (comp. 450/1056) places it in 152/769. According to the Ismaili tradition, Ismail died in 158/775, and was interred in Salamia. Besides Muhammad, he had a son called Ali, who was born in 130/748 and a daughter, Fatima.