According to your (Hindu) belief Vedas are eternal1 and Simritis, Puranas are the basis of your religion. We (Sikhs) accept Guru Granth Sahib Ji as our only scripture and accept only those Sakhis and religious books that are in accord with Guru Granth Sahib Ji. This is the instruction of the Guru. Except the Word of the Guru, all other word is false. False is the Word that is not the true Guru’s. False are the speakers, false are the hearers, false are those who speak and recite. (Guru Granth Sahib Ji, Ang 917) Sing the Guru's Bani, the supreme Word of Words. (Guru Granth Sahib Ji, Ang 917)