Bhagavad Gita 18.25

अनुबन्धं क्षयं हिंसामनपेक्ष्य च पौरुषम्।मोहादारभ्यते कर्म यत्तत्तामसमुच्यते॥

anubandhaṃ kṣayaṃ hiṃsāmanapekṣya ca pauruṣam |mohādārabhyate karma yattattāmasamucyate ||

That action which is undertaken from delusion, without regard for the consequences, loss, injury, and one's own ability, is declared to be Tamasic (dark).

An action undertaken through delusion, with no regard to the spiritual implications, the capacity of the doer, or the potential harm that may follow, is assumed to be a product of ignorance.

Our plain-language meaning of this verse is waiting for scholar review.