Mahabharata 1.2.42

तत आरण्यकं पर्व किर्मीरवध एव चईश्वरार्जुनयोर्युद्धं पर्व कैरातसंज्ञितम्

tata āraṇyakaṃ parva kirmīravadha eva caīśvarārjunayoryuddhaṃ parva kairātasaṃjñitam

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