Hashimiyah

Also called  Rawandiyah,   Islamic religiopolitical sect of the 8th–9th century AD, instrumental in the 'Abbasid overthrow of the Umayyad caliphate. The movement appeared in the Iraqi city of Kufah in the early 700s among supporters (called Shi'ites) of the fourth caliph 'Ali, who believed that succession to 'Ali's position of imam, or leader, of the Muslim community had devolved on Muhammad ibn al-Hanafiyah (d. c. 700), one