Bhagavad Gita 18.25अनुबन्धं क्षयं हिंसामनपेक्ष्य च पौरुषम्।मोहादारभ्यते कर्म यत्तत्तामसमुच्यते ॥

Tamasic acts cause harm to others. A Tamasic man reflects not at all whether he has the capacity to perform these useless actions, but continues to act blindly. With utter thoughtlessness he sets aside any reflection as to the difficulty of performing the action and what the result of it would be. He carries it on in his own egoistical manner. He does not discriminate between the good and the bad, or what is ones own and what belongs to another.Kshayam Loss of power and of wealth, resulting from the performance of an action.Himsa Injury to living beings.Paurusham Ones own ability or capacity to complete the work.Now listen to the characteristics that pertain to the pure agent. The Lord proceeds to deal with the distinction among the agents.