When the assassins were coming to murder Mohammed in his bed, it was Ali who wrapped himself in the Prophet’s blankets and risked taking the knife meant for Mohammed. In Medina, when the Muslims were in danger of annihilation, it was Ali who proved himself repeatedly as the virtual Achilles of Islam—for in those days, battles often began with individual challenges leading to single combat, and at each confrontation, when the Quraysh called on the Muslims to send out their best, Mohammed nominated Ali.