Guru Granth Sahib (Punjabi: ਗੁਰੂ ਗਰੰਥ ਸਾਹਿਬ ;Hindi: गुरु ग्रन्थ साहिब;[ɡʊɾu ɡɾəntʰ sɑhɪb]), is the central religious holy text of Sikhism, considered by Sikhs to be the final sovereign Guru of the religion. It is a reverent work containing 1430 Angs (pages), containing hymns of 36 saint mystics which includes Sikh Gurus (6 gurus), Bhagats(15 bhagats), Bhatts(11 bhatts) and Gursikhs(4 gursikhs). It is the only religious book in world that contains views and ideology of people of other religions , caste and creed. It also contains teachings of Sikh gurus themselves and was written by Bhai Gurdas Ji(first version) and by Bhai Mani Singh Ji(second version.
Despite the fact that Brahmins made a significant contribution during the times of Sikh Gurus, their role has not been highlighted so far. Out of 35 authors whose writings have been incorporated in Guru Granth Sahib, 16 were Brahmins, making their contribution 45 percent. The Bhatt Brahmins sang and wrote in the praise of Sikh Gurus and 11 of them had even laid down their lives for the cause of Sikhism during the lifetime of Sikh Gurus. They were bestowed with the honour of preacher (Manjis) by the Gurus
Generally, Scholars categorize authors of Guru Granth Sahib into four groups:
Philosophically, Sikhs are bound to believe in Shabad Guru but general belief is that The Sikh Gurus established Sikhism over the centuries, beginning in the year 1469. There are 6 Sikh Gurus whose hymns are present in Guru Granth Sahib:
In above list, The Sikh Bhagats (Punjabi: ਭਗਤ, from Sanskrit भक्त) were holy men of various sects whose teachings are included in the Sri Guru Granth Sahib. Their bani come under title Bani Bhagtaan Ki. The word "Bhagat" means devotee, and comes from the Sanskrit word Bhakti, which means devotion and love. Bhagats evolved a belief in one God that preceded Bhagat Kabir selected the writings of The Great Hindu Bhaktis and Sufi saints.