Bani Guru Granth Sahib Ji

Shri Guru Granth Sahib Ji
The Guru Granth Sahib, or Adi Granth, is the religious text (Gurbani) of Sikhism. They Contain 1430 Angs, compiled and composed during the period of Sikh gurus, from 1469 to 1708. It is a collection of hymns (shabad) or baani describing the qualities of God and why one should meditate on God's name. Guru Gobind Singh (1666–1708), the tenth guru, affirmed the sacred text Adi Granth as his successor, elevating it to Guru Granth Sahib. The text remains the holy scripture of the Sikhs, regarded as the teachings of the Ten Gurus. The role of Adi Granth, as a source or guide of prayer, is pivotal in worship in Sikhism.
Sri Guru Granth Sahib Ji Contains Baani By Various Bhat Sahibs and Bhagats too.

Major Nitnem Baanis are from Sri Guru Granth Sahib Ji
Namely
Sukhmani Sahib
Japuji Sahib
Anand Sahib
Reahras Sahib
Kirtan Sohila