The oldest Islamic biography of Muhammad, written in the mid-eighth century, relates that the prophet died at Medina in 632, while earlier and more numerous Jewish, Christian, Samaritan, and even Islamic sources indicate that Muhammad survived to lead the conquest of Palestine, beginning in 634-35. Although this discrepancy has been known for several decades, Stephen J. Shoemaker here writes the first systematic study of the various traditions. Using methods and perspectives borrowed from biblical studies, Shoemaker concludes that these reports of Muhammad's leadership during the Palestinian invasion likely preserve an early Islamic tradition that was later revised to meet the needs of a changing Islamic self-identity. Muhammad and his followers appear to have expected the world to end in the immediate future, perhaps even in their own lifetimes, Shoemaker contends. When the eschatological Hour failed to arrive on schedule and continued to be deferred to an ever more distant point, the