Śrīmad-Bhāgavatam · Text 1.2.8
Who is speaking and story frame
धर्म: स्वनुष्ठित: पुंसां विष्वक्सेनकथासु य: ।
नोत्पादयेद्यदि रतिं श्रम एव हि केवलम् ॥ ८ ॥
dharmaḥ svanuṣṭhitaḥ puṁsāṁ
viṣvaksena-kathāsu yaḥ
notpādayed yadi ratiṁ
śrama eva hi kevalam
The occupational activities a man performs according to his own position are only so much useless labor if they do not provoke attraction for the message of the Personality of Godhead.
Read Śrīla Prabhupāda's purport on Vedabase.io