The custom of such guhya or secretive Bhairava is undoubtedly an oral tradition that is continuing during the Expert disciple tradition. Their karmakand rituals and techniques are mystery, they aren't composed down but only learnt and practiced in guru disciple tradition. Bhairava is also referred to as on as protector, https://beckettvqldv.weblogco.com/30174726/a-review-of-bhairav