Mahabharata 5.144.2

सत्यमाह पृथा वाक्यं कर्ण मातृवचः कुरुश्रेयस्ते स्यान्नरव्याघ्र सर्वमाचरतस्तथा

satyamāha pṛthā vākyaṃ karṇa mātṛvacaḥ kuruśreyaste syānnaravyāghra sarvamācaratastathā

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