Mbh 7.177.1d

That heavy mace, as it coursed impetuously towards him with a terrible sound, the mighty cannibal baffled with a mace of his own. The latter then uttered a loud roar. Beholding that mighty and terrible feat of that prince of Rakshasas, Bhimasena filled with joy, seized another fierce mace. The battle then that took place between that human warrior and that Rakshasa, became dreadful. With the clash of their descending maces, the earth trembled violently. Casting aside their maces, they once more encountered each other. They struck each other with their clenched fists, falling with the sound of thunder. Excited with rage, they encountered each other with car-wheels, and yokes, and Akshas and Adhishthanas, and Upaskaras, in fact, with anything that came in their way. Encountering each other thus and both covered with blood, they looked like a couple of infuriated elephants of gigantic size. Then, Hrishikesa, ever devoted to the good of the Pandavas, beholding that combat, despatched Hidimva’s son for protecting Bhimasena.’”