Which text is considered the holy book of Islam?

The Koran, also known as the Quran, is regarded as the holy book of Islam. It is believed to be the word of God as revealed to the Prophet Muhammad through the Angel Gabriel. The Quran provides guidance on all aspects of life, including moral, spiritual, and social matters, and serves as a central religious text for Muslims around the world. It is recited and memorized in Arabic and is considered the ultimate authority in Islam.

In contrast, the other texts mentioned are sacred to different religions: The Bible is the holy scripture for Christians, containing the Old and New Testaments. The Torah is of great significance in Judaism, comprising the first five books of the Hebrew Bible. The Guru Granth Sahib is the principal scripture of Sikhism. Each of these texts holds a significant place in its respective faith but is not associated with Islam.