Mbh 15.29.3a

"Vaisampayana said, 'With the permission of the Kuru king, the Pandavas, O monarch, with their troops and the ladies of their household, supported themselves on diverse kinds of food and drink and passed about a month in great happiness in that forest. Towards the close of that period, O sinless one, Vyasa came there. While all those princes sat around Vyasa, engaged in conversation on diverse subjects, other Rishis came to that spot. They were Narada, and Parvata and Devala of austere penances, and Viswavasu and Tumvuru, and Chitrasena, O Bharata. Endued with severe penances, the Kuru king Yudhishthira, with the permission of Dhritarashtra, worshipped them according to due rites. Having obtained that worship from Yudhishthira, all of them sat down on sacred seats (made of Kusa grass), as also on excellent seats made of peacock feathers. After they had all taken their seats, the Kuru king of high intelligence took his seat there, surrounded by the sons of Pandu. Gandhari and Kunti and Draupadi, and she of the Sattwata race, and other ladies of the royal household also sat down. The conversation that then arose was excellent and had reference to topics connected with piety, and the Rishis of old, and the deities and the Asuras. At the close of that conversation Vyasa of great energy, that foremost of eloquent men, that first of all persons conversant with the Vedas, highly gratified, addressed the blind monarch and once more said,--"Burning as thou art with grief on account of thy children, I know, O king of kings, what object is cherished by thee in thy heart. The sorrow that always exists in the heart of Gandhari, that which exists in the heart of Kunti, and that also which is cherished by Draupadi in her heart, and that burning grief, on account of the death of her son, which Krishna's sister Subhadra also cherishes, are all known to me.