Mahabharata 7.31.25

नरस्याश्वस्य नागस्य समसज्जत शोणितम्उपाशाम्यद्रजो भौमं भीरून्कश्मलमाविशत्

narasyāśvasya nāgasya samasajjata śoṇitamupāśāmyadrajo bhaumaṃ bhīrūnkaśmalamāviśat

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