Mahabharata 1.13.41

नागांश्च मातुलांश्चैव तथा चान्यान्स बान्धवान्पितॄंश्च तारयामास संतत्या तपसा तथाव्रतैश्च विविधैर्ब्रह्मन्स्वाध्यायैश्चानृणोऽभवत्

nāgāṃśca mātulāṃścaiva tathā cānyānsa bāndhavānpitṝṃśca tārayāmāsa saṃtatyā tapasā tathāvrataiśca vividhairbrahmansvādhyāyaiścānṛṇo'bhavat

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