Mahabharata 13.85.33

ईश्वरोऽङ्गिरसं चाग्नेरपत्यार्थेऽभ्यकल्पयत्पितामहस्त्वपत्यं वै कविं जग्राह तत्त्ववित्

īśvaro'ṅgirasaṃ cāgnerapatyārthe'bhyakalpayatpitāmahastvapatyaṃ vai kaviṃ jagrāha tattvavit

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