The tradition of these guhya or secretive Bhairava can be an oral custom that is continuous during the Expert disciple tradition. Their karmakand rituals and practices are magic formula, they aren't composed down but only learnt and practiced in guru disciple tradition. The Ruru form of Bhairav is rather successful https://keeganddayv.webdesign96.com/30610102/considerations-to-know-about-bhairav