Bhagavad Gita, Chapter 18, Verse 35

यया स्वप्नं भयं शोकं विषादं मदमेव च । न विमुञ्चति दुर्मेधा धृतिः सा पार्थ तामसी

yayā svapnaṃ bhayaṃ śokaṃ viṣādaṃ madameva ca | na vimuñcati durmedhā dhṛtiḥ sā pārtha tāmasī

Translation

That with which a stupid man does not give up sleep, fear, grief, depression and lust, that firmness, O Pārtha, is Tāmasic.

— Alladi Mahadeva Sastri

Word meanings

yayā
by which
svapnam
sleep
bhayam
fear
śokam
grief
viṣādam
despair
madam
intoxication
eva
even
ca
and
na
not
vimuñcati
abandons
durmedhā
evil-witted
dhṛtiḥ
firmness
that
pārtha
O Pārtha
tāmasī
tāmasic

Śaṅkarācārya's commentary

The stupid man holds sensual gratification in high esteem and never gives up lasciviousness. He regards sleep etc. as things that ought always to be resorted to.