—for in this very Book he declares the unbelief of the Christians in several passages, summons them to believe in him, and commands that they be fought. Consequently, anyone who knows that he is a prophet—even if he imagined that the prophet was sent only to a particular group—is obliged to affirm as true everything he reports; and he has, in fact, reported the unbelief and misguidance of the Christians. Once this is established, no appeal to any scripture or rational argument can avail them; rather, it is understood, in broad terms, that everything they employ to prove the soundness of their religion is false, even if the refutation of each of their arguments is not spelled out in detail—for the prophets speak nothing but the truth.

Likewise, when the Messiah—peace be upon him—pronounced unbelief upon those Jews who denied him, everything the Jews advanced in opposition to that ruling was null and void. Therefore, whatever contradicts the statement of the infallible Prophet—may Allah bless him and grant him peace—is false.

If, on the other hand, they reject Muhammad with an unqualified rejection and say that he is not a prophet at all, was sent to no one—neither Arabs nor others—and was merely an impostor, then it would be even more impossible for them to affirm the prophethood of anyone else; for the very path by which the prophethood of Moses and Jesus is known leads—more compellingly still—to the knowledge that Muhammad, may Allah bless him and grant him peace, is a prophet. Accordingly, if they say, “The prophethood of Moses and the Messiah was established through miracles, and those miracles have reached us by uninterrupted mass transmission,” they will be answered: “The miracles of Muhammad—may Allah bless him and grant him peace—are greater, and their transmission is even more certain; the Book he brought is more perfect, his community is superior, and the laws of his religion are finer. Moses came with justice, and Jesus came to complete it with grace, while he—"