The tradition of such guhya or secretive Bhairava is surely an oral tradition that is constant from the guru disciple custom. Their karmakand rituals and techniques are magic formula, they don't seem to be prepared down but only learnt and practiced in guru disciple custom. The Ruru sort of Bhairav https://vashikaran01086.techionblog.com/30131069/considerations-to-know-about-bhairav