Mbh 14.60.3b

In that encounter between Drona and the son of Prishata, the kings assembled from diverse realms were nearly exterminated. That furious battle lasted for five days. At the conclusion of that period, Drona, exhausted, succumbed to Dhrishtadyumna. After that, Karna became the generalissimo of Duryodhana's forces. He was supported in battle by the remnant of the Kaurava host which numbered five Akshauhinis. Of the sons of Pandu there were then three Akshauhinis. After the slaughter of innumerable heroes, protected by Arjuna, they came to battle. The Suta's son Karna, though a fierce warrior, encountering Partha, came to his end on the second day, like an insect encountering a blazing fire. After the fall of Karna, the Kauravas became dispirited and lost all energy. Numbering three Akshauhinis, they gathered round the ruler of the Madras. Having lost many car-warriors and elephants and horsemen, the remnant of the Pandava army, numbering one Akshauhini and penetrated with cheerlessness, supported Yudhishthira (as their leader). The king Yudhishthira, in the battle that ensued, achieved the most difficult feats and slew, before half the day was over, the king of the Madras. After the fall of Salya, the high-souled Sahadeva of immeasurable prowess slew Sakuni, the man who had brought about the quarrel (between the Pandavas and the Kurus). After the fall of Sakuni, the royal son of Dhritarashtra, whose army had suffered an extensive carnage and who on that account had become exceedingly cheerless, fled from the field, armed with his mace. Then Bhimasena of great prowess, filled with wrath, pursued him and discovered him within the waters of the Dwaipayana lake. With the remnant of their army, the Pandavas surrounded the lake and, filled with joy, encountered Duryodhana concealed within the waters. Their wordy shafts, penetrating through the waters, pierced Duryodhana. Rising up from the lake, the latter approached the Pandavas, armed with his mace, desirous of battle.