Mbh 8.52.1c

When the battle, becoming general, raged so furiously on all sides, the warriors fought with and slew one another without distinct perceptions of those they fought with or struck. A dusty cloud overspread the field of battle, and the weapons used fell in thick showers. The scene being thus darkened, the combatants could no longer distinguish friends from foes. Indeed, that fierce and awful battle proceeded thus. And soon there began to flow many mighty rivers of the bloody currents. And they abounded with the heads of combatants that formed their rocks. And the hair of the warriors constituted their floating weeds and moss. Bones formed the fishes with which they teemed, and bows and arrows and maces formed the rafts by which to cross them. Flesh and blood forming their mire, those terrible and awful rivers, with currents swelled by blood, were thus formed there, enhancing the fears of the timid and the joy of the brave. Those awful rivers led to the abode of Yama. Many plunged into those streams inspiring Kshatriyas with fear, and perished. And in consequence of various carnivorous creatures, O tiger among men, roaring and yelling on all sides, the field of battle became terrible like the domains of the king of the dead. And innumerable headless trunks rose up on all sides. And terrible creatures, gorging on flesh and drinking fat, and blood, O Bharata, began to dance around. And crows and vultures and cranes, gratified with fat and marrow and other animals relishing flesh, were seen to move about in glee. They, however, O king, that were heroes, casting off all fear which is so difficult of being cast off, and observing the vow of warriors, fearlessly did their duty. Indeed, on that field where countless arrows and darts coursed through the air, and which was crowded with carnivorous creatures of diverse kinds, brave warriors careered fearlessly, displaying their prowess. Addressing one another, O Bharata, they declared their names and families.