Mahabharata 8.4.28

राजा भगीरथो वृद्धो बृहत्क्षत्रश्च केकयःपराक्रमन्तौ विक्रान्तौ निहतौ वीर्यवत्तरौ

rājā bhagīratho vṛddho bṛhatkṣatraśca kekayaḥparākramantau vikrāntau nihatau vīryavattarau

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