When the divine girl (Vaishnavi) attained the beautiful cave on Trikut mountain, she stationed a brave Hanuman Ji in the door from the cave to act as a guard and prevent Bhairavnath from following her inside. Bhairav attempted to enter the cave and started battling with the courageous Hanuman Ji. https://donovan91ws0.blogdosaga.com/39086950/considerations-to-know-about-shabar-mantra