Mahabharata Drona Parva Chapter 171:3

Mahabharata Drona Parva (Ghatotkacha-badha Parva) Chapter 171:3 Like a mighty mass of clouds dispersed on all sides by the wind, that army of thine, O monarch, was dispersed on all sides. Indeed, that host, O chief of the Bharatas, thus slaughtered on the night, fled away in all directions, afflicted with fear and in the very sight (of their leaders). Many abandoning the animals they rode, other urging their animals to their greatest speed, turned back from the battle, inspired with fear, during that fierce hour of darkness. Having vanquished thy warriors thus, O bull of Bharata's race, Vasudeva and Dhananjaya cheerfully blew their conchs. Dhrishtadyumna, O monarch, piercing Drona with three arrows, quickly cut off the latter's bowstring with a sharp arrow. Throwing down that bow on the earth, heroic Drona, that grinder of Kshatriyas, took up another that was exceedingly tough and strong. Piercing Dhrishtadyumna then with five arrows, Drona pierced his driver also, O bull of Bharata's race, with five arrows. Checking Drona with his arrows, the mighty car-warrior Dhrishtadyumna began to destroy the Kaurava host, like Maghavat destroying the Asura army. During the slaughter of thy son's army, O sire, a terrible river, having blood for its current, began to flow. And it ran between the two hosts, bearing away men and steeds and elephants along its current. And it resembled, O king, the Vaitarani that flows, O lord, towards the domains of Yama. Agitating and routing thy army, the valiant Dhrishtadyumna, endued with great energy, blazed forth like Sakra in the midst of the celestials. Then Dhrishtadyumna and Sikhandin blew their large conchs, as also the twins (Nakula and Sahadeva), and Vrikodara, the son of Pandu. Thus those fierce warriors, vanquished thousands of kings on thy side that were endued with great energy, at the sight of thy son and of Karna and the heroic Drona and Drona's son, O monarch!