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Ismāʿīlī Imams

In the Nizārī Ismāʿīlī interpretation of Shia Islam, the Imam is the guide and the intercessor between humans and God, and the individual through whom God is recognized. He is also responsible for the esoteric interpretation of the Quran (taʾwīl). He is the possessor of divine knowledge and therefore the "Prime Teacher". According to the "Epistle of the Right Path", a Persian Ismāʿīlī prose text from the post- Mongol period of Ismāʿīlī history, by an anonymous author, there has been a chain of Imams since the beginning of time, and there will continue to be an Imam present on the Earth until the end of time. The worlds would not exist in perfection without this uninterrupted chain of Imams. The proof (hujja) and gate (bāb) of the Imam are always aware of his presence and are witness to this uninterrupted chain.

After the death of Ismāʿīl ibn Jaʿfar, many Ismāʿīlīs believed that one day the eschatological figure of Imam Mahdi, whom they believed to be Muhammad ibn Imam Ismāʿīl, would return and establish an age of justice. One group included the violent Qarmatians, who had a stronghold in Bahrain. In contrast, some Ismāʿīlīs believed the Imamate did continue, and that the Imams were in Occultation and still communicated and taught their followers through a network of Da'i ("Missionaries").

In 909 CE, Abdullah al-Mahdi Billah, a claimant to the Ismāʿīlī Imamate, established the Fatimid Caliphate. During this period, three lineages of Imams were formed. The first branch, known today as the Druze, began with Al-Ḥākim bi-Amr Allāh. Born in 985 CE, he ascended as ruler at the age of eleven. When in 1021 CE his mule returned without him, soaked in blood, a religious group that was forming in his lifetime broke off from mainstream Ismāʿīlīsm and did not acknowledge his successor. Later to be known as the Druze, they believe Al-Ḥākim to be God incarnate and the prophesied Mahdi on Earth, who would one day return and bring justice to the world. The Druze faith further split from Ismāʿīlīsm as it developed into a distinct monotheistic Abrahamic religion and ethno-religious group with its own unique doctrines, and finally separated from both Ismāʿīlīsm and Islam altogether. Thus, the Druze do not identify themselves as Muslims, and are not considered as such by Muslims either.

The second split occurred between Nizārī and Musta‘lī Ismāʿīlīs following the death of Ma'ad al-Mustansir Billah in 1094 CE. His rule was the longest of any caliph in any Islamic empire. Upon his death, his sons, Nizār (the older) and Al-Musta‘lī (the younger), fought for political and spiritual control of the dynasty. Nizār was defeated and jailed, but according to the Nizārī tradition his son escaped to Alamut, where the Iranian Ismāʿīlī had accepted his claim. From here on, the Nizārī Ismāʿīlī community has continued with a present, living Imam.

The Musta‘lī Ismāʿīlīs split between the Ṭayyibi and the Ḥāfiẓi; Ṭayyibi Ismāʿīlīs, also known as "Bohras", are further divided between Dawudi Bohras, Sulaymani Bohras, and Alavi Bohras. The former denomination claims that At-Tayyib Abi l-Qasim, son of Al-Amir bi-Ahkami l-Lah, and the Imams following him went into a period of anonymity (Dawr-e-Satr) and appointed a Da'i al-Mutlaq ("Unrestricted Missionary") to guide the community, in a similar manner as the Ismāʿīlīs had lived after the death of Muhammad ibn Imam Ismāʿīl. The latter denomination claims that the ruling Fatimid caliph was the Imam, and they died out with the fall of the Fatimid Empire.