The Great Epic of the Bhārata dynasty 6.42.29

6.42.29

prayuddhānāṃ prabhagnānāṃ punarāvartatāmapi |
nātra sveṣāṃ pareṣāṃ vā viśeṣaḥ samajāyata || 29 ||

And kings in thousands, commanded by Yudhishthira, with their (respective) troops fell upon the ranks of thy son. And the encounter between the combatants of the two hosts was fierce in the extreme. And no difference could be perceived between the combatants of our side or that of the foe, while battling, or retreating in broken array or rallying again to the fight. In that terrific and awful battle, thy father (Bhishma) shone, transcending that countless host.