The Quran is the Book of Allah and Prophet Muhammad was its recipient, conveyer and interpreter. He never claimed it to be his own words, but rather constantly admitted its divine source. In fact, the Quran itself bears evidences that refute any claim that attributes it to Muhammad (peace and blessings be upon him) or to any other source.
Need to know more about such evidences?
Join Sheikh Sohaib Saeed as he explains why the Quran cannot be the words of Muhammad (peace and blessings be upon him).