High Quality Content by WIKIPEDIA articles! Yahya Ibn Ibrahim (c. 440/1048) was a leader of the Banu Gudala tribe. Yahya Ibn Ibrahim's primary significance was in his involvement with Abdallah ibn Yasin, an African Muslim theologian who founded the Almoravid movement. The Banu Gudala were a tribe of the Sanhaja. They lived closest to the coast, beyond the Banu Lamtuna. These tribes rose to proclaim the truth, to repel injustice and to abolish all non-canonical taxes (magharim). They were Sunnis, strict adherents the school of Malik bin Anas. Abdallah ibn Yasin began to call people to Holy war and made them proclaim the truth. As described by Al-Bakri Yahya Ibn Ibrahim went on the Pilgrimage to Mecca and during his return journey met a jurist (Abu Imran al-Fasi). Al-Fasi was interested in the religious doctrines and customs of Ibrahim's native country. Al-Fasi found Ibrahim "wholly ignorant, though avid to learn, full of good intentions and firm of faith"