Verse
मूढग्राहेणात्मनो यत् पीडया क्रियते तपः ।परस्योत्सादनार्थं वा तत्तामसमुदाहृतम् ॥
mūḍhagrāheṇātmano yat pīḍayā kriyate tapaḥparasyotsādanārthaṃ vā tattāmasamudāhṛtam
That askesis which is pursued under a clouded and deluded idea, performed with effort and suffering imposed on oneself or else with a concentration of the energy in a will to do hurt to others, that is said to be tamasic.
Gītā 17·19That which makes this kind of energism tamasic is not any principle of inertia, for inertia is foreign to tapasya, but a darkness in the mind and nature, a vulgar narrowness and ugliness in the doing or a brutish instinct or desire in the aim or in the motive feeling.
