Bhagwad Gita
Chapter 18, Verse 39
यदग्रे चानुबन्धे च सुखं मोहनमात्मनः।निद्रालस्यप्रमादोत्थं तत्तामसमुदाहृतम्।।18.39।।
And that happiness which is blind to self-realization, which is delusion from beginning to end and which arises from sleep, laziness and illusion is said to be of the nature of ignorance.