Mahabharata 5.178.15

तमहं प्रणम्य शिरसा भूयो ब्राह्मणसत्तमम्अब्रुवं कारणं किं तद्यत्त्वं योद्धुमिहेच्छसि

tamahaṃ praṇamya śirasā bhūyo brāhmaṇasattamamabruvaṃ kāraṇaṃ kiṃ tadyattvaṃ yoddhumihecchasi

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