Bhairava is also called on as protector, as he guards the eight Instructions on the universe. In Shiva temples, when the temple is shut, the keys are positioned before Bhairava. अष्टक्षरो महा मन्त्रः सर्वाशापरिपूरकः । ।। इति बटुक भैरव तन्त्रोक्तं भैरवकवचम् ।। ॐ ह्रीं दण्डपाणिर्गुह्यमूले भैरवीसहितस्तथा । पातु शाकिनिका https://socialdosa.com/story6201302/top-bhairav-kavach-secrets