The Guru Granth Sahib is fully compiled and completed by Guru Arjan.

The Guru Granth Sahib is the central holy religious scripture of Sikhism, regarded by Sikhs as the final, sovereign and eternal Guru following the lineage of the ten human gurus of the religion. The Adi Granth, its first rendition, was compiled by the fifth guru, Guru Arjan (1564–1606). Its compilation was completed on 29 August 1604 and first installed inside the Golden Temple in Amritsar on 1 September 1604. Baba Buddha was appointed the first Granthi of the Golden Temple. Shortly afterwards Guru Hargobind added Ramkali Ki Vaar. Later, Guru Gobind Singh, the tenth Sikh guru, added hymns of Guru Tegh Bahadur to the Adi Granth and affirmed the text as his successor. This second rendition became known as the Guru Granth Sahib and is also sometimes referred to as the Adi Granth.

Guru Arjan was the fifth of the ten total Sikh Gurus. He compiled the first official edition of the Sikh scripture called the Adi Granth, which later expanded into the Guru Granth Sahib. He is regarded as the first of the two Gurus martyred in the Sikh faith.

August 29 is the 241st day of the year in the Gregorian calendar; 124 days remain until the end of the year.