Abu Yazid Khariji, or Abu Yazid Makhlad bin Kaydad, traced his tribal origin to the clan of Ifran, one of the leading branches of the Zanata. He was a schoolmaster at Taharat, and had a leaning towards the doctrines of the Kharijis. He learnt the doctrines from Abu Ammar al-A'ma. Abu Yazid had been elected then the leader of the Kharijis, and became more interested to acquire political power. After spending sometime in Taharat, he returned to Qastilia, where he started his anti-Fatimid agitation in 316/928 and soon procured a large following.