The Great Epic of the Bhārata dynasty 6.2.1

6.2.1

vaiśaṃpāyana uvāca |
tataḥ pūrvāpare saṃdhye samīkṣya bhagavānṛṣiḥ |
sarvavedavidāṃ śreṣṭho vyāsaḥ satyavatīsutaḥ || 1 ||

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.