स यथा शकुनिः सूत्रेण प्रबद्धो दिशंदिशं पतित्वान्यत्रायतनमलब्ध्वा बन्धन-मेवोपश्रयत एवमेव खलु सोम्य तन्मनोदिशं दिशं पतित्वान्यत्रायतनमलब्ध्वाप्राणमेवोपश्रयते प्राणबन्धनँ हि सोम्यमन इति ॥ २ ॥
In plain words
Just as a bird tied to a string by its handler flies off in every direction, and finding no resting place elsewhere, settles back upon the very tether that binds it—so too, dear one, the mind flies off in every direction, and finding no resting place elsewhere, settles back upon prana. For the mind, dear one, is tethered to prana.
Close to the Sanskrit
That, just as a bird bound by a string to a place, having flown in every direction and not having found an abode elsewhere, resorts only to the tether; exactly thus indeed, dear one, that mind, having flown in every direction and not having found an abode elsewhere, resorts only to prana. For the mind, dear one, is bound to prana.