The Tradition of these guhya or secretive Bhairava is an oral custom that is continuous inside the guru disciple custom. Their karmakand rituals and procedures are solution, they're not published down but only learnt and practiced in Expert disciple custom. The word ‘Bhairava’ originates in the Sanskrit term ‘Bhiru,’ this https://www.youtube.com/shorts/0vLISs2kzMI