Abdullah ibn Sabaʾ al-Ḥimyarī (or ibn Sabāʾ, also sometimes called ibn al-Sawdāʾ, ibn Wahb, or ibn Ḥarb) was a dubious 7th-century figure in Islamic history who is often associated with a group of followers called the Sabaʾiyya (Arabic: سبئية‎).According to Sunni and Shia tradition, Abdullah bin Saba' was a Yemenite Jewish convert to Islam. Because of his exaggerated reverence for Ali, he is traditionally considered as the first of the ghulāt. In accounts collected by Sayf ibn Umar, Ibn Saba' and his followers (the Saba'iyya) are said to be the ones who enticed the Egyptians against Uthman and were responsible for breaking the near-settlement at the Battle of the Camel. Modern historians have differed on the historicity of Ibn Saba'.