Bhagavatapurana 5.19.14

5.19.14

yathaihikāmuṣmika-kāma-lampaṭaḥ suteṣu dāreṣu dhaneṣu cintayan /
śaṅketa vidvān kukalevarātyayād yas tasya yatnaḥ śrama eva kevalam //

14. “If, like a person who is addicted to pleasures of this or that world and is anxious about his children, wife and wealth, a learned person should be anxious of about losing his contemptible mortal body, all his endeavours in studying Sastras would be only painful labour.