Explanation:

Adi Granth: literally means "the first book." This is the early compilation of the Sikh Scriptures by Guru Arjan, the fifth Sikh Guru, in 1604. This Granth (Book) is the Holy Scripture of the Sikhs. The tenth Sikh Guru, Guru Gobind Singh added further holy Shabads to this Granth during the period 1704 to 1706. Then in 1708, before taking leave for his heavenly abode, Guru Gobind Singh affirmed the Adi Granth as the perpetual Guru of the Sikhs and the Granth then became known as the Sri Guru Granth Sahib.