The Rahit is the code of belief and conduct laid down by the tenth Guru, Guru Gobind Singh for all Sikhs who join the Khalsa. Is this important and pioneering study, McLeod rejects the commonly held view that the Rahit has descended unchanged since its first promulgation. Tracing the development of the Rahit, through the last three centuries, he argues that it has evolved in response to historical circumstances and that the modern Rahit, in some respects, is different from the original one.