The custom of those guhya or secretive Bhairava is definitely an oral custom that is continuous in the Expert disciple tradition. Their karmakand rituals and tactics are mystery, they are not penned down but only learnt and practiced in guru disciple custom. The Ruru kind of Bhairav is very helpful https://vashikaran99885.alltdesign.com/bhairav-things-to-know-before-you-buy-49834146