The Great Epic of the Bhārata dynasty 3.1.39

3.1.39

nivṛtteṣu tu paureṣu rathānāsthāya pāṇḍavāḥ |
prajagmurjāhnavītīre pramāṇākhyaṃ mahāvaṭam || 39 ||

'The citizens having ceased to follow, the Pandavas ascended their cars, and setting out reached (the site of) the mighty banian tree called Pramana on the banks of the Ganges. And reaching the site of the banian tree about the close of the day, the heroic sons of Pandu purified themselves by touching the sacred water, and passed the night there. And afflicted with woe they spent that night taking water alone as their sole sustenance. Certain Brahmanas belonging to both classes, viz., those that maintained the sacrificial fire and those that maintained it not, who had, with their disciples and relatives, out of affection followed the Pandavas thither also passed the night with them. And surrounded by those utterers of Brahma, the king shone resplendent in their midst. And that evening, at once beautiful and terrible, those Brahmanas having lighted their (sacred) fires, began to chant the Vedas and hold mutual converse. And those foremost of Brahmanas, with swan-sweet voices spent the night, comforting that best of Kurus--the king."