User blog comment:IndigoOnIceCream/What Would They Think/@comment-1738490-20120331053359/@comment-4727448-20120401011920

Muhammad made it clear that Abu Bakr was to be his successor, but during the War between Ali and Muawiyah, the Shias eventually formed and said that Ali should have been Caliph in the first place. The Fatwah was rising anyways, so it was inevitable and there was nothing Muhammad could do about it.