Mahabharata 3.280.2
गणयन्त्याश्च सावित्र्या दिवसे दिवसे गतेतद्वाक्यं नारदेनोक्तं वर्तते हृदि नित्यशः
gaṇayantyāśca sāvitryā divase divase gatetadvākyaṃ nāradenoktaṃ vartate hṛdi nityaśaḥ
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book