Mahabharata 12.296.11

बुध्यते च परां बुद्धिं विशुद्धाममलां यदाषड्विंशो राजशार्दूल तदा बुद्धत्वमाव्रजेत्

budhyate ca parāṃ buddhiṃ viśuddhāmamalāṃ yadāṣaḍviṃśo rājaśārdūla tadā buddhatvamāvrajet

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