Mahabharata 7.134.79

आदौ वा यदि वा पश्चात्तवेदं कर्म मारिषत्वमुत्पन्नो महाबाहो पाञ्चालानां वधं प्रति

ādau vā yadi vā paścāttavedaṃ karma māriṣatvamutpanno mahābāho pāñcālānāṃ vadhaṃ prati

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