Surah 32. As-Sajdah, Ayah 2

By the time of the holy Prophet the earlier Books of Revelation had been corrupted, by human ignorance or selfishness or fraud, or misinterpreted, or lost altogether. There were sects violently disputing with each other as to their true meaning. Such doubts had to be set at rest, and they were set at rest by the revelation of the Qur-an. The Quranic inspiration came direct from Allah, the Lord of the Worlds, and did not consist merely of human conjectures or a reconstructed philosophy, in which there is always room for doubt or dispute. Cf. also ii. 2.