Mbh 6.44.2a

Sanjaya said, “Hearing those words of his (elder) brother, thy son Dussasana advanced with his troops, with Bhishma at their head, and the Pandavas also advanced with cheerful hearts, desiring battle with Bhishma, having Bhimasena at their head. Then leonine shouts, and clamorous uproars and the noise of Krakachas, the blare of cow-horns, and the sound of drums and cymbals and tabors, arose in both armies. And the warriors of the foe rushed against us, and we also (rushed) against them with loud shouts. And the uproar (caused by this rush) was deafening.[317] The vast hosts of the Pandavas and the Dhartarashtras, in that awfully murderous encounter shook in consequence of that uproar of conches and cymbals, like forests shaken by the wind.[318] And the din made by those hosts teeming with kings, elephants, and steeds, rushing against one another in that evil hour, was as loud as that of oceans agitated by the tempest. And when that din, loud and causing the hair to stand on end, arose, the mighty-armed Bhimasena began to roar like a bull. And those roars of Bhimasena rose above the clamour of conches and drums, the grunts of elephants, and the leonine shouts of the combatants. Indeed, the shouts of Bhimasena transcended the noise made by the thousands of chargers neighing in (both) the armies. And hearing those shouts of Bhimasena who was roaring like the clouds, shouts that resembled the report of Sakra’s thunder, thy warriors were filled with fear. And at those roars of the hero, the steeds and elephants all ejected urine and excreta like other animals at the roar of the lion. And roaring like a deep mass of clouds, and assuming an awful form, that hero frightened thy sons and fell upon them.[319] Thereupon the brothers, viz.