Mahabharata 1.163.1

वसिष्ठ उवाच · vasiṣṭha uvāca

यैषा ते तपती नाम सावित्र्यवरजा सुतातां त्वां संवरणस्यार्थे वरयामि विभावसो

yaiṣā te tapatī nāma sāvitryavarajā sutātāṃ tvāṃ saṃvaraṇasyārthe varayāmi vibhāvaso

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