Mahabharata 8.65.7

8.65.7

ubhau mahendrasya samānavikramāvubhau mahendrapratimau mahārathau |
mahendravajrapratimaiśca sāyakairmahendravṛtrāviva saṃprajahratuḥ || 7 ||

The combat between the two heroes became furious like that between the chief of the celestials and Virocana's son in days of yore. Incapable of being endured by others and marked by a river whose distasteful water consisted of blood, the limbs of those two heroes, as also their drivers and animals, became exceedingly mangled. Like two large lakes, both teeming with lotuses of diverse kinds and fish and tortoises, and echoing with the voices of diverse kinds of fowl, and softly stirred by the wind, approaching each other, those two cars graced with standards approached each other. Both endued with prowess equal to that of the great Indra, both resembling the great Indra himself, those two mighty car-warriors struck each other with shafts that resembled the great Indra's thunder, like the great Indra himself and (the asura) Vritra.