Rehras Sahib is the evening prayer of the Sikhs, which speaks of the greatness of Waheguru. As recorded in the Guru Granth Sahib, it contains the hymns of four different Gurus; Guru Nanak, Guru Amardas, Guru Ramdas and Guru Arjan Dev. Now part of the Rehiras Sahib the Benti Chaupai, attributed to Guru Gobind Singh was added to the Bani in the late 19th century.