Mahabharata 9.15.63
अथास्य निजघानाश्वांश्चतुरो नतपर्वभिःद्वाभ्यामथ शिताग्राभ्यामुभौ च पार्ष्णिसारथी
athāsya nijaghānāśvāṃścaturo nataparvabhiḥdvābhyāmatha śitāgrābhyāmubhau ca pārṣṇisārathī
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book