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Announcement of the Mahdiyya

On 29 June 1881, Muhammad Ahmad claimed to be the Mahdi so as to prepare the way for the second coming of Jesus. In part, his claim was based on his status as a prominent Sufi sheikh with a large following in the Samaniyya Order and among the tribes in the area around Aba Island.

Yet the idea of the Mahdiyya had been central to the belief of the Samaniyya prior to Muhammad Ahmad's pronouncement. The previous Samaniyya leader, Sheikh al-Qurashi Wad al-Zayn, had asserted that the long-awaited-for redeemer would come from the Samaniyya line. According to Sheikh al-Qurashi, the Mahdi would make himself known through a number of signs, some established in the early period of Islam and recorded in the Hadith literature. Others had a more distinctly local origin, such as the prediction that the Mahdi would ride the sheikh's pony and erect a dome over his grave after his death.

Drawing from aspects of the Sufi tradition that were intimately familiar to both his followers and his opponents, Muhammad Ahmad claimed that he had been appointed as the Mahdi by a prophetic assembly or hadra (Arabic: Al-Hadra Al-Nabawiyya, الحضرة النبوية). A hadra, in the Sufi tradition, is a gathering of all the prophets from the time of Adam to Muhammad, as well as many Sufi holy men who are believed to have reached the highest level of affinity with the divine during their lifetime. The hadra is chaired by Muhammad, known as Sayyid al-Wujud, and at his side are the seven Qutb, the most senior of whom is known as Ghawth az-Zaman. The hadra was also the source of a number of central beliefs about the Mahdi, including that he was created from the sacred light at the centre of Muhammad's heart, and that all living creatures had acknowledged the Mahdi's claim since his birth.

Muhammad Ahmad framed the Mahdiyya as a return to the early days of Islam, when the Muslim community, or Ummah, was unified under the guidance of Muhammad and his immediate successors. Later, in order to distinguish his followers from adherents of other Sufi sects, the Mahdi forbade the use of the word darwish (commonly known as "dervish" in English) to describe his followers, replacing it with the title Ansār, the term which Muhammad used for the people of Medina who welcomed him and his followers after their flight from Mecca.