Mbh 6.59.2f

Then the mighty-armed Krishna, beholding the prowess of Bhishma in battle as also the mildness with which Arjuna fought, and seeing that Bhishma was creating incessant showers of arrows in that conflict and looked like the all-consuming Sun himself in the midst of the two armies, and marking besides, that that hero was slaying the foremost of combatants in Yudhishthira’s host and causing a havoc in that army as if the hour of dissolution had come,--the adorable Kesava, that slayer of hosts, endued with immeasurable soul--unable to bear what he saw, thought that Yudhishthira’s army could not survive that slaughter.--In a single day Bhishma can slaughter all the Daityas and the Danavas. With how much ease then can he slay in battle the sons of Pandu with all their troops and followers. The vast army of the illustrious son of Pandu is again flying away. And the Kauravas also beholding the Somakas routed, are rushing to battle cheerfully, gladdening the grandsire. Accoutred in mail, even I will stay Bhishma to-day for the sake of the Pandavas. This burthen of the high-souled Pandavas even I will lighten. As regards Arjuna, though struck in battle with keen shafts, he knoweth not what he should do, from respect for Bhishma,--And while Krishna was reflecting thus the grandsire, excited with wrath, once again shot his shafts at Partha’s car. And in consequence of very great number of those arrows all the points of the compass became entirely shrouded. And neither the welkin nor the quarters nor the earth nor the sun himself of brilliant rays, could be seen. And the winds that blew seemed to be mixed with smoke, and all the points of the compass seemed to be agitated.