Hazrat Ali became caliph after the death of Hazrat Usman at Madinah.However,Hazrat Muawiya (razi Allah anhu),a son of Abu Sufiyan and a companion of the Prophet(peace be upon him),did not accept his rule.This led to two battles between the Muslim themselves -the Battle of the camel,in which Hazrat Ali had to fight against Bibi Ayesha(razi Allah anhu),a wife of the holy Prophet(peace be upon him),and the Battle of Sufiyan, which was fought between the armies of Hazrat Ali and Hazrat Muawiya. Hazrat Ali, popularly known as Asadullah, or the lion of God, was an outstanding genius.He was a grate scholar as well as a fearless soldier, whose name itself stands as a symbol of bravery in the minds of Muslims, from his own time and throughout the. centuries