Mahabharata 3.10.4

व्यास उवाच · vyāsa uvāca

वैचित्रवीर्य नृपते सत्यमाह यथा भवान्दृढं वेद्मि परं पुत्रं परं पुत्रान्न विद्यते

vaicitravīrya nṛpate satyamāha yathā bhavāndṛḍhaṃ vedmi paraṃ putraṃ paraṃ putrānna vidyate

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