Mahabharata 13.111.11

प्रज्ञानं शौचमेवेह शरीरस्य विशेषतःतथा निष्किंचनत्वं च मनसश्च प्रसन्नता

prajñānaṃ śaucameveha śarīrasya viśeṣataḥtathā niṣkiṃcanatvaṃ ca manasaśca prasannatā

Our plain-language meaning of this verse is waiting for scholar review.