Mbh 6.74.2

“Meanwhile, during the continuance of that battle, the Pandavas, O bull of Bharata’s race, excited with wrath, fought with that mighty car-warrior Bhishma. And when the sun assumed a red hue, Dhananjaya exerting himself actively, slew five and twenty thousand great car-warriors. These, urged on by Duryodhana for slaying Partha, were thus completely destroyed before they could even come up to him, like insects on a blazing fire. Then the Matsyas and the Kekayas, all accomplished in the science of arms, surrounded that mighty car-warrior Partha as also his son (for supporting them). Just at that time the sun disappeared, and all the combatants seemed to be deprived of their senses. Then at twilight, O king, thy sire Devavrata, his animals having been tired, caused the troops to be withdrawn. And the troops of both the Pandavas and the Kurus, filled with fear and anxiety in course of that dreadful encounter, proceeded to their respective camps, the Pandavas with the Srinjayas and the Kauravas also rested for the night agreeably to the rules (of military science).”