Bhagavad Gita 18.39

यदग्रे चानुबन्धे च सुखं मोहनमात्मनः।निद्रालस्यप्रमादोत्थं तत्तामसमुदाहृतम्॥

yadagre cānubandhe ca sukhaṃ mohanamātmanaḥ |nidrālasyapramādotthaṃ tattāmasamudāhṛtam ||

That happiness which at first, as well as in the end, deludes the self, and which arises from sleep, indolence, and heedlessness—that is declared to be Tamasic.

While the pleasure that drugs the senses from start to finish, which springs from indolence, lethargy, and folly—that pleasure flows from Ignorance.

Our plain-language meaning of this verse is waiting for scholar review.