Mahabharata 7.165.109

नैष जातु परैः शक्यो जेतुं शस्त्रभृतां वरःअपि वृत्रहणा संख्ये रथयूथपयूथपः

naiṣa jātu paraiḥ śakyo jetuṃ śastrabhṛtāṃ varaḥapi vṛtrahaṇā saṃkhye rathayūthapayūthapaḥ

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