Mahabharata 7.122.4

तावेनं रथिनां श्रेष्ठौ रथाभ्यां रथसत्तमम्उभावुभयतस्तीक्ष्णैर्विशिखैरभ्यवर्षताम्

tāvenaṃ rathināṃ śreṣṭhau rathābhyāṃ rathasattamamubhāvubhayatastīkṣṇairviśikhairabhyavarṣatām

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