Mahabharata 14.71.5

अश्वविद्याविदश्चैव सूता विप्राश्च तद्विदःमेध्यमश्वं परीक्षन्तां तव यज्ञार्थसिद्धये

aśvavidyāvidaścaiva sūtā viprāśca tadvidaḥmedhyamaśvaṃ parīkṣantāṃ tava yajñārthasiddhaye

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