Mbh 6.64.1d

And they pierced his elephant also with showers of shafts. And struck by all those mighty car-warriors with showers of fierce shafts of diverse kinds that elephant, O king, of the ruler of the Pragjyotishas with blood trickling down his body, became beautiful to behold on the field of battle like a mass of clouds tinged with the rays of the sun. And that elephant with temporal juice trickling down urged by Bhagadatta, like the Destroyer, ran with double his former speed, shaking the very earth with his tread. Then all those mighty car-warriors, beholding that terrible mien of the animal, and regarding it irresistible, became cheerless. Then king Bhagadatta, that tiger among men, excited with rage, struck Bhimasena between his two breasts with a straight shaft. Deeply pierced by the king with that shaft, that great bowman and mighty car-warrior, with limbs deprived of sensation in consequence of a swoon, sat down on his car, holding his flagstaff. And beholding those mighty car-warriors terrified and Bhimasena in a swoon, Bhagadatta of great prowess uttered a loud roar. Then, O king, that terrible Rakshasa Ghatotkacha, beholding Bhima in that state, became excited with rage and there and then disappeared from the view. And creating a terrible illusion enhancing the fears of the timid, he reappeared in a moment assuming a fierce form. Himself riding on an Airavata created by his powers of illusion, the other Dik-elephants, viz., Anjana, Vamana, and Mahapadma of blazing glory, followed him. And those three mighty elephants, ridden by Rakshasas, were of huge form, with juice profusely trickling down in three lines, and endued with great speed and prowess. Then Ghatotkacha urged his own elephant to battle, desirous, O chastiser of foes, of slaying Bhagadatta with his elephant.