I know that my article is not related to this group ,but it might be
useful. PLEASE read it.

The Qur’n is the name given to Allah’s speech that He revealed to His
servant and Messenger Muhammad (peace be upon him); speech that is
recited as an act of worship, is miraculous, and cannot be imitated by
man. It is the name of Allah’s Book, and no other book is called by
this name.

The connection between the Creator and his Creation is by way of His
Messengers, and these Messengers only know what Allah wants from them
by way of revelation, either directly or indirectly. The rational mind
cannot dismiss the possibility of revelation, since nothing is
difficult for the all-powerful Creator

revelation is a communication between two beings: one that speaks,
commands, and gives, and another who is addressed, commanded, and
receives. Prophet Muhammad (peace be upon him) – as with every Prophet
– never confused himself with the One who gave the revelation to him.
As a human being, he felt his weakness before Allah, feared Allah’s
wrath if he should disobey, and hoped for Allah’s mercy.

Proves why it is impossible that Mohammad (Pbuh) wrote the Quran :
1. No matter how brilliant or insightful a person might be, there is
no way that he could discuss the happenings of nations lost to
antiquity, issues of belief and Divine Law, the rewards and
punishments of Heaven and Hell, and future events, all in such great
detail without any contradiction and with a most perfect style and
literary form. The Prophet (peace be upon him) had never once read a
book nor met with any historian
2. The Qur’n makes to the disbelievers a stern challenge that they
will never be able to produce a chapter similar to it. Such a
challenge would never have come from the Messenger (peace be upon him)
3. The Qur’n, in some places, sternly rebukes Muhammad (peace be upon
him) where he acted upon his own judgment in something and did not
decide on what is best. The Qur’n clarified the truth and showed the
error of the Prophet (peace be upon him).
4. Many verses of the Qur’n begin with the imperative verb “Say!” As
a matter of fact, this occurs more than three hundred times,
addressing Muhammad (peace be upon him) and directing him with respect
to what he should say. He, thus, did not follow his own desires; he
followed only what was revealed to him.
5. Complete harmony exists between what the Qur’n says regarding the
physical world and what has been discovered by modern science. This
has been a source of amazement for a number of contemporary western
researchers

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