Mbh 3.95.1b

Arriving at that spot, the heroic sons of Pandu practised the vow that is known by the name of the Chaturmasya according to all the rites and ordinances of the great sacrifice called Rishiyajna. It is there that that mighty tree called the Eternal banian stands. Any sacrifice performed there produces merit that is eternal. In that sacrificial platform of the gods producing eternal merit, the Pandavas began to fast with concentrated souls. And there came unto them Brahmanas by hundreds endued with wealth of asceticism. And those Brahmanas also all performed the Chaturmasya sacrifice according to the rites inculcated by the Rishis. And there in that tirtha, those Brahmanas old in knowledge and ascetic merit and fully versed in the Vedas, that constituted the court of the illustrious sons of Pandu, talked in their presence upon various subject of sacred import. And it was in that place that the learned vow-observing, and sacred Shamatha, leading, besides, a life of celibacy, spake unto them, O king, of Gaya, the son of Amurttaraya. And Shamatha said, ‘Gaya, the son of Amurttaraya, was one of the foremost of royal sages. Listen to me, O Bharata, as I recite his meritorious deeds. It was here, O king, that Gaya had performed many sacrifices distinguished by the enormous quantities of food (that were distributed) and the profuse gifts that were given away (unto Brahmanas). Those sacrifices, O king, were distinguished by mountains in hundreds and thousands of cooked rice, lakes of clarified butter and rivers of curds in many hundreds, and streams of richly-dressed curries in thousands. Day after day were these got ready and distributed amongst all comers, while, over and above this, Brahmanas and others, O king, received food that was clean and pure. During the conclusion also (of every sacrifice) when gifts were dedicated to the Brahmanas, the chanting of the Vedas reached the heavens.