Pandavas Camp at Pramana Banyan Tree
After the citizens turn back, the Pandavas ascend their chariots and travel to the great banyan tree Pramana on the banks of the Jahnavi. They touch the pure water and spend the night subsisting on nothing but water — the first night of their twelve-year exile, consoled only by the brahmanas who refused to leave them.
When the citizens returned, the Pandavas ascended their chariots and went to a large banyan tree named Pramana, situated on the banks of the Jahnavi. They reached the banyan tree at the close of the day. The brave warriors touched the pure water and spent the night there. Stricken with grief, they spent the night there, subsisting only on water.
Some brahmanas had followed them out of the love they bore for them, with their disciples and relatives. Some maintained the fire, while others did not. Surrounded by those who knew the brahman, the king was radiant. At the hour that is both beautiful and terrible, the fires were lit and after chanting the name of the brahman, conversations continued. In voices that were as soft as those of swans, the foremost among the brahmanas consoled the king, supreme among Kurus, and they spent the entire night. Aranyaka Parva, Chapter 298