Like I said, no human is able to compose anything like the Qur'aan because the terms in it are expressions of the Eternal Speech of God which is not letters, sound or language. It was copied by Angel Gabriel from the Guarded Tablet - where everything that happens in this world until the Day of Judgment has already been written.
Angel Gabriel taught Prophet MuHammad the Qur'aan.
At the time of Prophet MuHammad, there were some christians and jews that had heard or carried the teachings about a Prophet of the last days and his attributes. Many of them identified him and consequently some believed in him.
When I refer to a Hadeeth that is narrated by so many people from so many people in a way that is impossible for them all to be agreeing to lie, that obviously means that no person can deny the truth of it. No 2 Muslims differ in believing it.
Some miracles of Prophet MuHammad was the springing of a lot of water from between the flesh and bones of his fingers. It was enough water to allow a large amount of people to use to perform wudu' (a specific ablution in Islaam).
Also, the miracle of the Qur'aan is clear. That it tells of things that hadn't happened at the Prophets time and did end up happening. And that no human can compose anything like it.
Do you want more because there is much more. If Advisor has time maybe he can help me too
