One verse

Srimad Bhagavatam 1.2.9

1.2.9

धर्मस्य ह्यापवर्ग्यस्य नार्थोऽर्थायोपकल्पते । नार्थस्य धर्मैकान्तस्य कामो लाभाय हि स्मृत: ॥ ९ ॥

dharmasya hy apavargyasya nartho ’rthayopakalpate narthasya dharmaikantasya kamo labhaya hi smrtah

dharmasya
occupational engagement
hi
certainly
apavargyasya
ultimate liberation
na
not
arthah
end
arthaya
for material gain
upakalpate
is meant for
na
neither
arthasya
of material gain
dharma-eka-antasya
for one who is engaged in the ultimate occupational service
kamah
sense gratification
labhaya
attainment of
hi
exactly
smrtah
is described by the great sages.

All occupational engagements are certainly meant for ultimate liberation. They should never be performed for material gain. Furthermore, according to sages, one who is engaged in the ultimate occupational service should never use material gain to cultivate sense gratification.