श्रीमद् भगवद्गीता

मूल श्लोकः

यदग्रे चानुबन्धे च सुखं मोहनमात्मनः।

निद्रालस्यप्रमादोत्थं तत्तामसमुदाहृतम्।।18.39।।

English Translation By Swami Adidevananda

18.39 That pleasure which, at the beginning and at the end, deludes the self, through sleep, sloth and error - is declared to be Tamasika.