Mahabharata 14.45.15
संस्कारैः संस्कृतः पूर्वं यथावच्चरितव्रतःजातौ गुणविशिष्टायां समावर्तेत वेदवित्
saṃskāraiḥ saṃskṛtaḥ pūrvaṃ yathāvaccaritavrataḥjātau guṇaviśiṣṭāyāṃ samāvarteta vedavit
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book