So Purkh consists of 4 Shabads and is part of the second main composition in the Sikh holy Scripture called the Sri Guru Granth Sahib. This second composition called the Rehras is the evening prayer of the Sikhs. The second composition of the SGGS has two parts called the: * (1) "So Dar" SGGS page 8 to 10 and * (2) "So Purkh". SGGS page 10 to 12