Mbh 15.39.1

"'Narada said, "The king has not been burnt to death by an unsanctified fire. I have heard this there. I tell thee, O Bharata, such has not been the fate of Vichitraviryya. It has been heard by us that when the old king endued with great intelligence and subsisting on air alone entered the woods (after his return from Gangadwara), he caused his sacrificial fires to be duly ignited. Having performed his sacred rites therewith, he abandoned them all. Then the Yajaka Brahmanas he had with him cast off those fires in a solitary part of the woods and went away as they liked on other errands, O foremost one of Bharata's race. The fire thus cast off grew in the woods. It then produced a general conflagration in the forest. Even this is what I have heard from the ascetics dwelling on the banks of Ganga. United with that (sacred) fire of his own, O chief of the Bharatas, the king, as I have already said unto thee, met with death on the banks of Ganga. O sinless one, this is what the ascetics have told me,--those, viz., whom I saw on the banks of the sacred Bhagirathi, O Yudhishthira. Thus O lord of Earth, king Dhritarashtra, coming into contact with his own sacred fire, departed from this world and attained to that high goal that has been his. Through service rendered by her to her seniors, thy mother, O lord of men, has attained to very great success. There is not the slightest doubt of this. It behoveth thee, O king of kings, to now discharge the rites of water to their honour, with all thy brothers. Let, therefore, the necessary steps be taken towards that end."'