The holy book of Islam is the Quran. Muslims believe that the Quran is the last revelation of Allah to humanity and that it contains the exact words of Allah given to Muhammad through the angel Gabriel. The Quran is considered to be the final word on all spiritual matters. While the Bible and the Quran are considered to be sacred by Muslims, they are contradictory to each other in much that they teach. Muslims also believe in other holy books, including the Tawrat, the Zabur, and the Injeel. However, the Quran is the only book that is still available in its original text and is considered to be the final book of Allah.