Mahabharata Drona Parva (Dronabhisheka Parva) Chapter 1
Janamejaya said, "Hearing that his sire Devavrata of unrivalled vigour and sturdiness, and might, energy and prowess, had been slain by Sikhandin, the prince of the Panchalas, what, indeed, O regenerate Rishi, did the powerful king Dhritarashtra with eyes bathed in tears do? O illustrious one, his son (Duryodhana) wished for sovereignty after vanquishing those mighty bowmen, viz., the sons of Panda, through Bhishma and Drona and other great car-warriors. Tell me, O thou that hast wealth of asceticism, all that he, of Kuru's race, did after that chief of all bowmen had been slain.
Vaisampayana said, "Hearing that his sire had been slain, king Dhritarashtra of Kuru's race filled with anxiety and grief, obtained no peace of mind. And while he, of Kuru's race, was thus continually brooding over that sorrow, Gavalgana's son of pure soul once more came to him. Then, O monarch, Dhritarashtra, the son of Amvika, addressed Sanjaya, who had that night come back from the camp to the city called after the elephant. With a heart rendered exceedingly cheerless in consequence of his having heard of Bhishma's fall, and desirous of the victory of his sons, he indulged in these lamentations in great distress.
Dhritarashtra said, 'After having wept for the high-souled Bhishma of terrible prowess, what, O son, did the Kauravas, urged by fate, next do? Indeed, when that high-souled and invincible hero was slain, what did the Kauravas do, sunk as they were in an ocean of grief? Indeed, that swelling and highly efficient host of the high-souled Pandavas, would, O Sanjaya, excite the keenest fears of even the three worlds. Tell me, therefore, O Sanjaya, what the (assembled) kings did after Devavrata, that bull of Kuru's race, had fallen.
Sanjaya said, 'Listen, O king, with undivided attention, to me as I recite what thy sons did after Devavrata had been killed in battle. When Bhishma, O monarch, of prowess incapable of being baffled, was slain, thy warriors as also the Pandavas both reflected by themselves (on the situation). Reflecting on the duties of the Kshatriya order, they were filled with wonder and joy; but acting according to those duties of their own order, they all bowed to that high-souled warrior. Then those tigers among men contrived for Bhishma of immeasurable prowess a bed with a pillow made of straight shafts. And having made arrangements for Bhishma's protection, they addressed one another (in pleasant converse). Then bidding Ganga's son their farewell and walking round him, and looking at one another with eyes red in anger, those Kshatriyas, urged by fate, once more went out against one another for battle.