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Gurbani (Punjabi: ਗੁਰਬਾਣੀ) is the term used by Sikhs to refer to any compositions of the Sikh Gurus. Gurbani is composed of two words: 'Gur' meaning 'the Guru's' and 'bani' meaning 'word'.
Extracts from Guru Granth Sahib are called Gutkas (small books) containing sections of Gurbani. These Gutkas can vary from just a few pages to hundreds of pages and are used by the Sikhs to read these Banis on a daily basis. The handy size of the Gutkas makes it easy to carry them in a coat pocket or purse. Although the Gutkas have to be treated with respect and care, the Sikhs do not accord the Gutkas the same treatment as the Guru Granth Sahib their perpetual Guru, which is treated like a living Guru.
Main article: http://en.wikipedia.org/wiki/Nitnem
The Banis: Japji Sahib, Jaap Sahib, Tav-Parsad Savaiye, Chaupai Sahib and Anand Sahib should be read before sunset daily according to the Sikh Rehat Maryada. These are recited by initiated Sikhs in the early morning (before 6am). Rehras Sahib is read in the evening (at sunset) and Kirtan Sohila before going to sleep at night.
1,2,4,6,8: part of Guru Granth Sahib.
3,5a, 5b,7: all complied by the tenth Guru of the Sikhs called Guru Gobind Singh Ji and part of Dasam Granth.