Mahabharata 1.60.18

धूम्रायाश्च धरः पुत्रो ब्रह्मविद्यो ध्रुवस्तथाचन्द्रमास्तु मनस्विन्याः श्वसायाः श्वसनस्तथा

dhūmrāyāśca dharaḥ putro brahmavidyo dhruvastathācandramāstu manasvinyāḥ śvasāyāḥ śvasanastathā

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