Mahabharata 13.109.31
पक्षे पक्षे गते यस्तु भक्तमश्नाति भारतगवाढ्यो बहुपुत्रश्च दीर्घायुश्च स जायते
pakṣe pakṣe gate yastu bhaktamaśnāti bhāratagavāḍhyo bahuputraśca dīrghāyuśca sa jāyate
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book