ʿAbd Allāh ibn Wahb al-Rāsibī (Arabic:عبد الله بن وهب الراسبي; died 17 July 658AD) was an early leader of theKhārijites.[1] Of theBajīla tribe, he was atābiʿī, one who learned the teachings ofIslam directly from aṣaḥāba (companion) ofMuḥammad. He prostrated himself in prayer so frequently that he developedcalluses on his forehead, leading to the nickname,dhu ʾl-thafināt, "the man with the calluses".[2]
ʿAbd Allāh fought underṢaʿd ibn Abī Waqqāṣ in theconquest of Iraq. In thefirst Muslim civil war, he took the side of the CaliphʿAlī and fought for him at theBattle of Ṣiffīn (657). He opposed ʿAlī's decision to accept arbitration to end the civil war and joined the dissidents, soon to be known as Khārijites, gathering atḤarūrāʾ in Iraq. They later moved toKūfa, where they elected ʿAbd Allāh as theiramīr (commander) and not, as is sometimes claimed, the truecaliph (successor of Muḥammad).[2][3] They marched out in March 658 and were routed by ʿAlī in theBattle of Nahrawān on 17 July (9 Ṣafar 38AH). ʿAbd Allāh was killed in battle.[2]