The tradition of those guhya or secretive Bhairava is an oral tradition that is continuous from the Expert disciple tradition. Their karmakand rituals and procedures are mystery, they're not composed down but only learnt and practiced in guru disciple tradition. The title “Kaal” refers to time, although “Bhairav” signifies horrible https://yeepdirectory.com/listings13066122/the-kaal-bhairav-diaries