One verse

Bhagavad Gita 18.22

18.22

यत्तु कृत्स्नवदेकस्मिन्कार्ये सक्तमहैतुकम् | अतत्त्वार्थवदल्पं च तत्तामसमुदाहृतम् ||१८-२२||

yattu kṛtsnavadekasminkārye saktamahaitukam . atattvārthavadalpaṃ ca tattāmasamudāhṛtam ||18-22||

yat
that which
tu
but
kṛtsna-vat
as all in all
ekasmin
in one
kārye
work
saktam
attached
ahaitukam
without cause
atattva-artha-vat
without knowledge of reality
alpam
very meager
ca
and
tat
that
tāmasam
in the mode of darkness
udāhṛtam
is said to be

And that knowledge by which one is attached to one kind of work as the all in all, without knowledge of the truth, and which is very meager, is said to be in the mode of darkness.