Had the Prophet not been present among the people to explain...

Had the Prophet not been present among the people to explain the revelation to them, the Holy Qur'an would not have been revealed to them. They surely would not have come to know Allah's commandments even if the Holy Qur'an had been revealed in their language. This is simple common sense about which nobody contends, one which everyone knows.

Despite the revelation of the Holy Qur'an and its imposition of prayers, zakat , fast, and pilgrimage, the Muslims need the explanations of the Prophet especially since he was the one who showed them how to perform the prayers, how much zakat should be paid, what the injunctions related to the fast are, what rites the pilgrimage includes..., etc. Had it not been for him, people would never have come to know any of that.

If the Holy Qur'an, which contains no contradictions, and which no falsehood can approach…