Mbh 7.186.4

“‘Bhimasena said, “What man is there who being regarded as a Kshatriya and who taking his birth in the race of Drupada and who being the foremost of all persons possessing a knowledge of weapons, would only thus look at his foe stationed before him? What man having seen his sire and son slain, and especially, having sworn such an oath in the midst of the king, would thus be indifferent to his enemy? Yonder stands Drona like a fire swelling with its own energy. Indeed, with bow and arrows constituting his fuel, he is consuming with his energy all the Kshatriyas. Soon will he annihilate the Pandava army. Stand ye (as spectators) and behold my feat. Against Drona himself will I proceed.” Having said these words, Vrikodara, filled with rage, penetrated into Drona’s array, began to afflict and rout that host. Then the Panchala prince Dhrishtadyumna, also, penetrating into that large host, engaged himself with Drona in battle. The battle became furious. Such a fierce encounter we had never seen or heard of before, O king, as that which now took place at sunrise of that day. The cars, O sire, were seen to be entangled with one another. The bodies of embodied creatures deprived of lives were scattered all over the field. Some, while proceeding towards another part of the field, were, on the way, assailed by others. Some, while flying away, were struck on their backs, and others on their sides. That general engagement continued to rage fiercely. Soon, however, the morning sun rose.’”