I believe only if God is the source of the instruction that killing is just for prophets. Many of Muhammad's actions have nothing to do Allah even if he did exist. Muhammad raided for loot and assassinated because he did not like the poetry someone had written, etc..... In my original post (#368)on Muhammads violent actions I showed this is detail. It is the context that makes all the difference. The entire Quran looks exactly like what an insecure, ignorant, violent, and sinful man would invent. He borrowed stories from gnostic and heretical texts, copied paganistic practices, led fights he started, killed many for disagreeing with him, got pretty much every story borrowed from the Bible wrong, married children, had symptoms that match in every detail what the Bible points out about demon possession, and made leaving Islam a capital offense. In the Bible when the Jews acted without God and fought, God punished them severely, and when he ordered a battle he had sufficient moral justification for it. Muhammad had no justification for most of his battles and assassinations. It is not that he killed but why.