founder of a Mohammedan sect, was born at Serenj about A.D. 820. After teaching in his native city, he came to Khorassan, where he met a celebrated hermit, Ahmed ben-Harb, who induced him to visit the Kaaba. On his return to Khorassan, after a five years' sojourn to Mecca, he taught his new doctrines in Nichapur. He was imprisoned by Mohammed ben- Thaher, but finally escaped and found refuge in Jerusalem. He is the founder of the Anthropomorphites, or Mochebites. He died in Jerusalem in 868.