IF RASULULLOH MUHAMMAD WROTE AL QUR’AN;

Alloh would punish Muhammad sholallohu ‘alaihi wa sallam. Alloh said:
“And if he had forged a false saying concerning Us, We surely would have seized him by his right hand, And then We certainly would have cut off Al-Watin from him, (al Haqqah: 44-46)

Ibn `Abbas rodhiyallohu ‘anhu said, "It (Al-Watin) refers to the artery of the heart, and it is the vein that is attached to the heart.'' This has also been said by `Ikrimah, Sa`id bin Jubayr, Al-Hakim, Qatadah, Ad-Dahhak, Muslim Al-Batin and Abu Sakhr Humayd bin Ziyad. Muhammad bin Ka`b said, "It (Al-Watin) is the heart, its blood, and whatever is near it.''(tafsir Ibnu Katsir)

Rasululloh Muhammad was truthful and righteous. He was guided. Al qur’an is the speech of Alloh, it was not forged by Muhammad rasululloh.