Mahabharata 12.115.15
तं स्वकर्माणि कुर्वाणं प्रतिकर्तुं य इच्छतिभस्मकूट इवाबुद्धिः खरो रजसि मज्जति
taṃ svakarmāṇi kurvāṇaṃ pratikartuṃ ya icchatibhasmakūṭa ivābuddhiḥ kharo rajasi majjati
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book