Bhagavad Gīta Bhāshya and Tātparya
B.G 17.19
मूढग्राहेणात्मनो यत् पीडया क्रियते तपः। परस्योत्सादनार्थं वा तत्तामसमुदाहृतम् ॥१९॥
Austerity performed with a foolish intent, causing self-torment or intended to harm others, is considered to be of the nature of 'tāmasam' i.e. ignorance.

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बहुचित्रजगद्बहुधाकरणात् परशक्तिरनन्तगुणः परमः ।
सुखरूपममुष्य पदं परमं स्मरतस्तु भविष्यति तत्सततम् ॥
"The one who has created this variegated vast universe with varied forms has infinite power and is of infinite auspicious qualities. He certainly bestows the highest state of bliss to those who meditate on his ever happy essence." -Dwādasha stōtra 4.3

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