Mahabharata 12.98.1

युधिष्ठिर उवाच · yudhiṣṭhira uvāca

क्षत्रधर्मान्न पापीयान्धर्मोऽस्ति भरतर्षभअभियाने च युद्धे च राजा हन्ति महाजनम्

kṣatradharmānna pāpīyāndharmo'sti bharatarṣabhaabhiyāne ca yuddhe ca rājā hanti mahājanam

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