Bhagavatapurana 10.2.36.p1

10.2.36.p1

śṛṇvan gṛṇan saṃsmarayaṃś ca cintayan $ nāmāni rūpāṇi ca maṅgalāni te &

37. "He who, by listening to, or singing, or causing others to remember, or contemplating Thy auspicious names and forms and while performing his various duties, devotes his mind to Thy lotus-like feet, has not to sink in Samsara again.