Sau Sakhi, also known as Guru Ratan Mal, is a collection of a hundred sakhis (stories) traditionally attributed to Bhai Ram Kanwar, a descendant of Baba Buddha who had dictated it to scribe Sahib Singh. Sau Sakhi has multiple perspectives, with its authenticity being debated. There are different versions of the text in circulation. The text covers the life of Guru Gobind Singh, religious tenets, code of conduct, and political events, with many prophetic and esoteric elements. However, the text also contains anachronisms, misstatements, interpolations, and biases that have been inserted into the work by different editors over time, so it has to be approached carefully by researchers. The text is held high in regard by the Namdhari and the Nihangs.