अकुर्वदपि कर्तेव चेतः प्रघनवासनम् ।निस्पन्दाङ्गमपि स्वप्ने श्वभ्रपातस्थिताविव
In plain words
And the mind whose vāsanā is thick, though it does not act, is as if it were the agent -- like a man whose limbs lie motionless in sleep, and who yet feels himself falling into a pit.