Ashramavasika Parva

The five Pandavas live in amity with the survivors of their uncle's family, with Yudhishthira scrupulously consulting Dhritarashtra on matters of governance.

After fifteen years Dhritarashtra and his wife sought the king's permission to take sannyasa (renunciation of domestic life for moksha).

Before leaving for the forest Dhritarashtra dispatched Vidura to the king, asking for the means to perform a śrāddha for the deceased Kurus.

Vyasa then told him how Vidura was an incarnation of Dharma, the god of righteousness, born in the mortal world through the curse of Mandavya.

Vyasa understanding the sorrow of Dhritarashtra, Gandhari, and Kunti offered them a glimpse of their sons and relatives who died at Kurukshetra.

The spirits of the slain then rose from the waters of the Bhagirathi, with Vyasa offering the blind Dhritarashtra celestial vision for beholding those heroes.

Two years later, Narada informed Yudhishthira that Dhritarashtra, Gandhari, and Kunti had willingly perished in a forest-fire, after ordering Sanjaya to escape.

Ashramvasika parva, Chapter 5: Let thy judicial officers, O Yudhishthira, inflict punishments on offenders, according to the law, after careful determination of the gravity of the offenses.