Verse
कर्षयन्तः शरीरस्थं भूतग्राममचेतसः ।मां चैवान्तःशरीरस्थं तान्विद्ध्यासुरनिश्चयान् ॥
karṣayantaḥ śarīrasthaṃ bhūtagrāmamacetasaḥmāṃ caivāntaḥśarīrasthaṃ tānviddhyāsuraniścayān
The men who perform violent austerities, contrary to the Shastra, with arrogance and egoism, impelled by the force of their desires and passions, men of unripe minds tormenting the aggregated elements forming the body and troubling Me also, seated in the body, know these to be Asuric in their resolves.
Gītā 17·6