The Guru Granth Sahib, is the central religious text of Sikhism, considered by Sikhs to be the final sovereign Guru of the religion. It contains 1430 Angs, containing 5,894 hymns of 36 saint mystics which includes Sikh gurus, Bhagats, Bhatts and Gursikhs. It is notable among foundational religious scriptures for including hymns from writers of other religions, namely Hindus and Muslims. The scripture also contains compositions by authors of varying caste-backgrounds, including Shudras and untouchables. It also contains teachings of the Sikh gurus themselves.