Mahabharata 12.137.79

कर्म चात्महितं कार्यं तीक्ष्णं वा यदि वा मृदुग्रस्यतेऽकर्मशीलस्तु सदानर्थैरकिंचनः

karma cātmahitaṃ kāryaṃ tīkṣṇaṃ vā yadi vā mṛdugrasyate'karmaśīlastu sadānarthairakiṃcanaḥ

Our plain-language meaning of this verse is waiting for scholar review.