Mahabharata 14.74.1

वैशंपायन उवाच · vaiśaṃpāyana uvāca

प्राग्ज्योतिषमथाभ्येत्य व्यचरत्स हयोत्तमःभगदत्तात्मजस्तत्र निर्ययौ रणकर्कशः

prāgjyotiṣamathābhyetya vyacaratsa hayottamaḥbhagadattātmajastatra niryayau raṇakarkaśaḥ

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