Mbh 8.49.1h

And some plunged into its depths, and some sank in it and some rose above its surface as they swam through it. Smeared all over with blood, their armour and weapons and robes--all became bloody. Some bathed in it and some drank the liquid and some became strengthless, O bull of Bharata's race. Cars and steeds, and men and elephants and weapons and ornaments, and robes and armour, and combatants that were slain or about to be slain, and the Earth, the welkin, the firmament, and all the points of the compass, became red. With the odour, the touch, the taste, and the exceedingly red sight of that blood and its rushing sound, almost all the combatants, O Bharata, became very cheerless. The Pandava heroes then, headed by Bhimasena and Satyaki, once more rushed impetuously against that army already beaten. Beholding the impetuosity of that rush of the Pandava heroes to be irresistible, the vast force of thy sons, O king, turned its back on the field. Indeed, that host of thine, teeming with cars and steeds and elephants and men no longer in compact array, with armour and coats of mail displaced and weapons and bows loosened from their grasp, fled away in all directions, whilst being agitated by the enemy, even like a herd of elephants in the forest afflicted by lions.'"