The custom of such guhya or secretive Bhairava is undoubtedly an oral tradition that is continuing during the guru disciple custom. Their karmakand rituals and methods are top secret, they aren't penned down but only learnt and practiced in guru disciple custom. The word ‘Bhairava’ originates with the Sanskrit term https://directory-url.com/listings13070518/kaal-bhairav-options