Mbh 7.24.3b

Then Bhagadatta, that king of the mountainous regions, frustrating with his iron hook that shower of arrows, began to consume both the Pandavas and the Panchalas by means of that elephant of his. Indeed, O monarch, the feat that we then beheld, achieved by old Bhagadatta with his elephant, was highly wonderful. Then the ruler of the Dasarnas rushed against the king of the Pragjyotisha, on a fleet elephant with temporal sweat trickling down, for attacking Supratika in the flank. The battle then that took place between those two elephants of awful size, resembled that between two winged mountains overgrown with forests in days of old. Then the elephant of Bhagadatta, wheeling round and attacking the elephant of the king of the Dasarnas, ripped open the latter’s flank and slew it outright. Then Bhagadatta himself with seven lances bright as the rays of the sun, slew his (human) antagonist seated on the elephant just when the latter was about to fall down from his seat. Piercing king Bhagadatta then (with many arrows), Yudhishthira surrounded him on all sides with a large number of cars. Staying on his elephant amid car-warriors encompassing him all around, he looked resplendent like a blazing fire on a mountain-top in the midst of a dense forest. He stayed fearlessly in the midst of those serried cars ridden by fierce bowmen, all of whom showered upon him their arrows. Then the king of the Pragjyotisha, pressing (with his toe) his huge elephant, urged him towards the car of Yuyudhana. That prodigious beast, then seizing the car of Sini’s grandson, hurled it to a distance with great force. Yuyudhana, however, escaped by timely flight. His charioteer also, abandoning the large steeds of the Sindhu breed, yoked unto that car, quickly followed Satyaki and stood where the latter stopped. Meanwhile the elephant, quickly coming out of the circle of cars, began to throw down all the kings (that attempted to bar his course).