In a comprehensive study of early Islamic history, Wilferd Madelung examines the conflict which developed after Muhammad's death for the leadership of the Muslim community. He pursues the history of this conflict through the reign of the four 'Rightly Guided' caliphs to its climax in the first inter-Muslim war. The outcome of the war, which marked the demise of the reign of the Early Companions, resulted in the lasting schism between Sunnite and Shi'ite...