Mahabharata Bhishma Parva Chapter 2

Mahabharata Bhishma Parva (Jamvu-khanda Nirmana Parva) Chapter 2 Vaisampayana said,—"Seeing then the two armies (standing) on the east and the west for the fierce battle that was impending, the holy Rishi Vyasa, the son of Satyavati, that foremost of all persons acquainted with the Vedas, that grandsire of the Bharatas, conversant with the past, the present, and the future, and beholding everything as if it were present before his eyes, said these words in private unto the royal son of Vichitravirya who was then distressed and giving way to sorrow, reflecting on the evil policy of his sons. Vyasa said,—'O king, thy sons and the other monarchs have their hour arrived. Mustered in battle they will kill one another. O Bharata, their hour having come, they will all perish. Bearing in mind the changes brought on by time, do not yield thy heart to grief. O king, if thou wish to see them (fighting) in battle, I will, O son, grant thee vision. Behold the battle.' "Dhritarashtra said,—'O best of regenerate Rishi, I like not to behold the slaughter of kinsmen. I shall, however, through thy potency hear of this battle minutely. Vaisampayana continued.—"Upon his not wishing to see the battle but wishing to hear of it, Vyasa, that lord of boons, gave a boon to Sanjaya. (And addressing Dhritarashtra he said),—'This Sanjaya, O king, will describe the battle to thee. Nothing in the whole battle will be beyond this one's eyes. Endued, O king with celestial vision, Sanjaya will narrate the battle to thee. He will have knowledge of everything. Manifest or concealed, (happening) by day or by night, even that which is thought of in the mind, Sanjaya shall know everything. Weapons will not cut him and exertion will not fatigue him. This son of Gavalgani will come out of the battle with life. As regards myself, O bull of Bharata's race, the fame of these Kurus, as also of all the Pandavas, I will spread. Do not grieve. This is destiny, O tiger among men. It behoveth thee not to give way to grief. It is not capable of being prevented. As regards victory, it is there where righteousness is.'"