The signs that prove the prophecy of Muhammad, are numerous. Many books have been written to enumerate them and thoroughly discuss them. We would like to mention some of these signs as reported by Muslim scholars and which prove that Muhammad was a real Prophet including:

- First, his good biography and high morals as well as the noble qualities that distinguished him. He was known before becoming a Prophet as a truthful and honest person, although the community where he lived was a society of ignorance. This was, perhaps, the most important sign of his prophecy. He was not known to have ever lied on people. So, why should he lie on behalf of the Lord by claiming that he was a Prophet, if he was not a real Prophet?
- Second, the powers and triumphs Allah gave him and the spread of the religion he preached, as well as the triumph of this religion over all existing religions in a short period of time. Had he been a liar, Allah would have humiliated and destroyed him as He did with those before him who falsely claimed Prophethood.
- Third, the miracles Allah gave him as supporting evidence were beyond the ability of human beings and were beyond range of natural phenomena. The moon split for him, water gushed from his fingers, food became more abundant in his hands, and similar phenomena were authentically reported and happened in a way that could not be denied.

The book in our hands explains and lists the miracle of the splitting of the moon in all its details for everyone who wanted to know more about this miracle that has been proven true in all the books of the Prophet's biography.