Mahabharata 5.197.17

पञ्च नागसहस्राणि रथवंशाश्च सर्वशःपदातयश्च ये शूराः कार्मुकासिगदाधराःसहस्रशोऽन्वयुः पश्चादग्रतश्च सहस्रशः

pañca nāgasahasrāṇi rathavaṃśāśca sarvaśaḥpadātayaśca ye śūrāḥ kārmukāsigadādharāḥsahasraśo'nvayuḥ paścādagrataśca sahasraśaḥ

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