One verse

Srimad Bhagavatam 3.32.5

3.32.5

ये स्वधर्मान्न दुह्यन्ति धीरा: कामार्थहेतवे । नि:सङ्गा न्यस्तकर्माण: प्रशान्ता: शुद्धचेतस: ॥ ५ ॥

ye sva-dharman na duhyanti dhirah kamartha-hetave nihsanga nyasta-karmanah prasantah suddha-cetasah

ye
those who
sva-dharman
their own occupational duties
na
do not
duhyanti
take advantage of
dhirah
intelligent
kama
sense gratification
artha
economic development
hetave
for the sake of
nihsangah
free from material attachment
nyasta
given up
karmanah
fruitive activities
prasantah
satisfied
suddha-cetasah
of purified consciousness.

Those who are intelligent and are of purified consciousness are completely satisfied in Krsna consciousness. Freed from the modes of material nature, they do not act for sense gratification; rather, since they are situated in their own occupational duties, they act as one is expected to act.