Complex sentence: Ravidassi is a tradition in itself and not a part of Sikhism, but the teachings of Shri Guru Ravidass Ji are a part of the Sikh religion holy book Guru Granth Sahib.
Split into simpler sentences: Ravidassi is a tradition in itself and its not a part of Sikhism. The teachings of Shri Guru Ravidass Ji are a part of the Sikh religion holy book Guru Granth Sahib.