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    मरुतोऽन्तर्बहिर्वापि वियद्युग्मानिवर्तनात् । भैरव्या भैरवस्येत्थं भैरवि व्यज्यते वपुः ॥ २५ ॥

    When the ingoing pranic air and outgoing pranic air are both restrained in their space from their (respective points of) return, the essence of bhairava, which is not different from bhairavi, manifests.