Mahabharata 1.42.18

तत्र तां भैक्षवत्कन्यां प्रादात्तस्मै महात्मनेनागेन्द्रो वासुकिर्ब्रह्मन्न स तां प्रत्यगृह्णत

tatra tāṃ bhaikṣavatkanyāṃ prādāttasmai mahātmanenāgendro vāsukirbrahmanna sa tāṃ pratyagṛhṇata

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