Mahabharata 12.263.14

शमेन तपसा चैव भक्त्या च निरुपस्कृतःशुद्धात्मा ब्राह्मणो रात्रौ निदर्शनमपश्यत

śamena tapasā caiva bhaktyā ca nirupaskṛtaḥśuddhātmā brāhmaṇo rātrau nidarśanamapaśyata

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