Mahabharata 1.169.10

तं तथा निश्चितात्मानं महात्मानं महातपाःवसिष्ठो वारयामास हेतुना येन तच्छृणु

taṃ tathā niścitātmānaṃ mahātmānaṃ mahātapāḥvasiṣṭho vārayāmāsa hetunā yena tacchṛṇu

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