Verse 29

आत्मनः सदृशीं लीलां जीवो हृद्वनमर्कटः ।दीर्घमाकारमादाय निमेषाद्याति ह्रस्वताम्

In plain words

The jīva, a monkey in the forest of the heart, [plays] a sport like its own self: taking on a long form, in an instant it goes to shortness.