Mahabharata 6.86.19

तथैव च महाराज समेत्यान्योन्यमाहवेपरस्परवधं घोरं चक्रुस्ते हयसादिनः

tathaiva ca mahārāja sametyānyonyamāhaveparasparavadhaṃ ghoraṃ cakruste hayasādinaḥ

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