Verse 57

प्राणानिलस्तथा स्पन्दं विशत्वद्य प्रभञ्जनम् ।विशन्त्वाकाशकुहरं शब्दश्रवणशक्तयः

In plain words

"Let the prāṇa-wind likewise enter today into motion, into the great wind; let the powers of sound and of hearing enter the hollow of space."