One verse

Srimad Bhagavatam 1.2.8

1.2.8

धर्म: स्वनुष्ठित: पुंसां विष्वक्सेनकथासु य: । नोत्पादयेद्यदि रतिं श्रम एव हि केवलम् ॥ ८ ॥

dharmah svanusthitah pumsam visvaksena-kathasu yah notpadayed yadi ratim srama eva hi kevalam

dharmah
occupation
svanusthitah
executed in terms of one’s own position
pumsam
of humankind
visvaksena
the Personality of Godhead (plenary portion)
kathasu
in the message of
yah
what is
na
not
utpadayet
does produce
yadi
if
ratim
attraction
sramah
useless labor
eva
only
hi
certainly
kevalam
entirely.

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.