BG 17.19
मूढग्राहेणात्मनो यत्पीडया क्रियते तपः
परस्योत्सादनार्थं वा तत्तामसमुदाहृतम्
mūḍhagrāheṇātmano yatpīḍayā kriyate tapaḥ
parasyotsādanārthaṃ vā tattāmasamudāhṛtam
TRANSLATION
That austerity which is practised from deluded notions by means of self-torture or in order to injure another is said to be Tamasika.
PURPORT
Deluded persons are those who lack correct understanding. That austerity which is practised from deluded notion, viz., from the obstinate determination by deluded persons, by self-torture regardless of one’s own capacity or which is performed for causing sufferings to others—that is said to be Tamasika.
