One verse

Bhagavad Gita 18.35

18.35

यया स्वप्नं भयं शोकं विषादं मदमेव च | न विमुञ्चति दुर्मेधा धृतिः सा पार्थ तामसी ||१८-३५||

yayā svapnaṃ bhayaṃ śokaṃ viṣādaṃ madameva ca . na vimuñcati durmedhā dhṛtiḥ sā pārtha tāmasī ||18-35||

yayā
by which
svapnam
dreaming
bhayam
fearfulness
śokam
lamentation
viṣādam
moroseness
madam
illusion
eva
certainly
ca
also
na
never
vimuñcati
one gives up
durmedhā
unintelligent
dhṛtiḥ
determination
sā
that
pārtha
O son of Pṛthā
tāmasī
in the mode of ignorance

And that determination which cannot go beyond dreaming, fearfulness, lamentation, moroseness and illusion – such unintelligent determination, O son of Pṛthā, is in the mode of darkness.