Chapter 17 - Verse 19

मूढग्राहेणात्मनो यत्पीडया क्रियते तपः ।
परस्योत्सादनार्थं वा तत्तामसमुदाहृतम् ॥ १९ ॥

mūḍhagrāheṇātmano yatpīḍayā kriyate tapaḥ .
parasyotsādanārthaṃ vā tattāmasamudāhṛtam .. 19 ..


The austerity which is practised out of a foolish notion, with self-torture, or for the purpose of ruining another, is declared to be Tamasic.