Rehras Sahib is collection of hymns of five different Gurus. The Rehras as recorded in the Guru Granth Sahib contains hymns of only Guru Nanakji, Guru Amardas ji, Guru Ramdas ji and Guru Arjan Dev j. The compositions of Guru Gobind Singh ji were added in Rehras Sahib in the late 19th century. This was later ratified by the supreme Sikh religious body - the Shiromani Gurudwara Prabandhak Committee (SGPC) Recite after you've worked hard and feel tired. It adds energy to your being. It covers your business actions and living environments. It helps you when you are physically weak, weak in money, property and earthly matters; when you feel hopeless, unsuccessful or worthless. Bayntee Chaopaee is Guru Gobind Singh's personal prayer for protection and is to liberate the soul. Related to water element. Its recited so that one does not have to leave Sach Khand (highest spiritual plane.