Mbh 6.109.4a

Sanjaya said, “I will tell thee, O king, what thy sire did when thy sons’ host was afflicted by the Pandavas and the Srinjayas. With cheerful hearts, the brave sons of Pandu, O elder brother of Pandu, encountered thy son’s host, slaughtering (all whom they met). That carnage, O chief of men, of human beings, elephants and steeds, that destruction by the foe of thy army in battle, Bhishma could not brook. That invincible and great bowman, then, reckless of his very life poured upon the Pandavas, the Panchalas, and the Srinjayas, showers of long shafts and calf-toothed and crescent-shaped arrows. And with weapons, O monarch, he checked with his shafts and with showers of other weapons, both offensive and defensive, all sped with energy and wrath, the five foremost of mighty car-warriors of the Pandavas, who had been struggling vigorously in battle. Excited with wrath, he slaughtered in that battle countless elephants and steeds. And that bull among men, O monarch, throwing down many car-warriors from their cars,[473] and horsemen from their horses, and crowds of foot soldiers, and elephant-warriors from the backs of the beasts they rode, struck terror into the foe. And the Pandava warriors all rushed together upon Bhishma singly, upon that mighty car-warrior struggling in battle with great activity, like the Asuras rushing together upon him with the thunderbolt in hand. Shooting on all sides his whetted arrows whose touch resembled that of Indra’s thunder, he seemed to the enemy to have assembled a terrible visage. While fighting in that battle, his large bow, resembling that of Sakra himself, seemed to be always drawn to a circle. Beholding those feats in battle, thy sons, O monarch, filled with exceeding wonder, worshipped the grandsire. The Parthas cast their eyes, with cheerless hearts, upon thy heroic sire struggling in battle, like the celestials upon (the Asura) Viprachitti (in days of old).