Mahabharata 3.209.25

उक्थो नाम महाभाग त्रिभिरुक्थैरभिष्टुतःमहावाचं त्वजनयत्सकामाश्वं हि यं विदुः

uktho nāma mahābhāga tribhirukthairabhiṣṭutaḥmahāvācaṃ tvajanayatsakāmāśvaṃ hi yaṃ viduḥ

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