பகவத்கீதை 14.8

தமோ குணம் அறியாமையிலிருந்து பிறந்து, அனைத்து உயிர்களையும் மயக்குகிறது. இது கவனக்குறைவு, சோம்பல் மற்றும் அதீத தூக்கம் ஆகியவற்றின் மூலம் ஒருவனைப் பந்தப்படுத்துகிறது. தமோ குணம் கொண்டவன் செயலற்றவனாகவும், பகுத்தறிவற்றவனாகவும், கடமைகளை மறப்பவனாகவும் இருப்பான்.

Tamas is that binding force with a tendency to lethargy? sloth and foolish actions. It causes delusion or nondiscrimination. It binds him who associates the Self with the body. A Tamasic man acts under the compulsion of the wants of the body. He has no power of judgment. Troubled by the wants of the body he acts under pressure to keep himself alive. His actions are not guided by reason. They are on the plane of instinct. His senses are dull. He becomes infatuated and stupefied. He has no inclination to work. He yawns much. He sleeps too much. He always wants to sleep. He nevr knows when and how to act? what? to whom and how to talk. He takes delight in following the wrong path. He does not know how to behave or how to address others. He is thoughtless and ignorant. He forgets everything. He is negligent and indolent. He is just in a stage higher than lifeless matter.He who is under the grip of heedlessness (Pramada) is not able to discriminate between the eternal and the noneternal. This is an enemy of illumination? the effect of Sattva. He who is overpowered by laziness (Alasya) is not able to exert. This is an enemy of Pravritti? the effect of Rajas. Sleep (Nidra) is LayaVritti? (a state of absorption into ignorance) which is dependent on Tamas. This is the enemy of the works done by Sattva and Rajas.