The author is Allah (SWT). Please give the Quran a good Review. Do not destroy Allah's Book. Al-Kafiroon are trying to destroy it. The Holy Quran is a compilation of the verbal revelations given to the Holy Prophet Muhammad (sa) over a period of twenty three years. The Holy Quran is the Holy Book or the Scriptures of the Muslims. It lays down for them the law and commandments, codes for their social and moral behavior, and contains a comprehensive religious philosophy. The language of the Quran is Arabic.