Verse 31

चिरं कालं हृते कान्तव्योमसंवेदनान्मुने ।अवासनान्मनोध्यानात्प्राणस्पन्दो निरुद्ध्यते

In plain words

For a long span of time, O sage, the mind carried away into awareness of the lovely void; from meditation of a mind free of vāsanā -- the vibration of prāṇa is restrained.