Mbh 9.57.1e

Approaching the Kuru king, the son of Pandu, O monarch, accomplished in the use of the mace, began to whirl his weapon, taking aim at thy son. Bhimasena then struck Duryodhana on one of his flanks. Stupefied at that blow, the latter fell down on the earth, supporting himself on his knees. When that foremost one of Kuru's race fell upon his knees, a loud cry arose from among the Srinjayas, O ruler of the world! Hearing that loud uproar of the Srinjayas, O bull among men, thy son became filled with rage. The mighty-armed hero, rising up, began to breathe like a mighty snake, and seemed to burn Bhimasena by casting his glances upon him. That foremost one of Bharata's race then rushed at Bhimasena, as if he would that time crush the head of his antagonist in that battle. The high-souled Duryodhana of terrible prowess then struck the high-souled Bhimasena on the forehead. The latter, however, moved not an inch but stood immovable like a mountain. Thus struck in that battle, the son of Pritha, O monarch, looked beautiful, as he bled profusely, like an elephant of rent temples with juicy secretions trickling down. The elder brother of Dhananjaya, then, that crusher of foes, taking up his hero-slaying mace made of iron and producing a sound loud as that of the thunder-bolt, struck his adversary with great force. Struck by Bhimasena, thy son fell down, his frame trembling all over, like a gigantic Sala in the forest, decked with flowers, uprooted by the violence of the tempest. Beholding thy son prostrated on the earth, the Pandavas became exceedingly glad and uttered loud cries. Recovering his consciousness, thy son then rose, like an elephant from a lake. That ever wrathful monarch and great car-warrior then careering with great skill, struck Bhimasena who was standing before him. At this, the son of Pandu, with weakened limbs, fell down on the earth.