Prahlāda Mahārāja, who was truly the supreme learned person, then addressed his class friends in very sweet language. Smiling, he began to teach them about the uselessness of the materialistic way of life. Being very kind to them, he instructed them as follows.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
अथ तान् श्लक्ष्णया वाचा प्रत्याहूय महाबुधः । उवाच विद्वांस्तन्निष्ठां कृपया प्रहसन्निव
atha tān ślakṣṇayā vācā pratyāhūya mahābudhaḥ | uvāca vidvāṃstanniṣṭhāṃ kṛpayā prahasanniva
SB 7.5.55