The action that is undertaken through ignorance, without considering the consequence, the ruin, the harm, and one’s own capacity — that is called tāmasic.

Tāmasic action: mohāt — through ignorance, delusion. Anapekṣya — without considering:

• Anubandham — consequences, future results
• Kṣayam — damage, ruin (to oneself or others)
• Hiṃsām — violence
• Pauruṣam — one’s own capacity, whether it is adequate

It is impulsive, destructive action, without discernment.