The custom of such guhya or secretive Bhairava is definitely an oral custom that is continuing during the guru disciple custom. Their karmakand rituals and methods are mystery, they're not written down but only learnt and practiced in Expert disciple tradition. The Ruru form of Bhairav is quite productive and https://daltonfauog.jts-blog.com/29215603/considerations-to-know-about-bhairav