Mbh 3.234.3a

Vaisampayana said, “After the sons of Pandu had arrived at that lake, they chose a residence that was removed from the habitations of men. And they began to roam through delightful woods and ever charming mountains and picturesque river-valleys. And after they had taken up their residence there, many venerable ascetics endued with Vedic lore often came to see them. And those foremost of men always received those Veda-knowing Rishis with great respect. And one day there came unto the Kaurava princes a certain Brahmana who was well known on earth for his powers of speech. And having conversed with the Pandavas for a while, he went away as pleased him to the court of the royal son of Vichitravirya. Received with respect by that chief of the Kurus, the old king, the Brahmana took his seat; and asked by the monarch he began to talk of the sons of Dharma, Pavana, Indra and of the twins, all of whom having fallen into severe misery, had become emaciated and reduced owing to exposure to wind and sun. And that Brahmana also talked of Krishna who was overwhelmed with suffering and who then had become perfectly helpless, although she had heroes for her lords. And hearing the words of that Brahmana, the royal son of Vichitravirya became afflicted with grief, at the thought of those princes of royal lineage then swimming in a river of sorrow. His inmost soul afflicted with sorrow and trembling all over with sighs, he quieted himself with a great effort, remembering that everything had arisen from his own fault. And the monarch said, ‘Alas, how is it that Yudhishthira who is the eldest of my sons, who is truthful and pious and virtuous in his behaviour, who hath not a foe, who had formerly slept on beds made of soft Ranku skins, sleepeth now on the bare ground!