SikhiWiki:Weekly featured article/Week 45
Each salok is a couplet consisting of 2 lines. This Bani was incorporated into the Guru Granth Sahib by Guru Gobind Singh, the last human Guru of the Sikhs. As is commonly believed, they were composed by Guru Teg Bahadur while in the 'Kotwali' (prison) at Chandni Chowk, Delhi, before he achieved martyrdom.
These saloks form an important part of the epilogue when bringing to a close the reading of the Guru Granth Sahib (Bhog) on a religious or social occasion and should thus be the most familiar fragment of it, after the Japji Sahib, the Sikhs' morning prayer.