Mbh 1.62.5b

The virtuous man who with reverence heareth it or causeth it to be heard, obtaineth the fruit of the Rajasuya and the horse-sacrifice. The Bharata is said to be as much a mine of gems as the vast Ocean or the great mountain Meru. This history is sacred and excellent, and is equivalent to the Vedas, worthy of being heard, pleasing to the ear, sin-cleansing, and virtue-increasing. O monarch, he that giveth a copy of the Bharata to one that asketh for it doth indeed make a present of the whole earth with her belt of seas. O son of Parikshit, this pleasant narration that giveth virtue and victory I am about to recite in its entirety: listen to it. The sage Krishna-Dwaipayana regularly rising for three years, composed this wonderful history called Mahabharata. O bull amongst the Bharata monarchs, whatever is spoken about virtue, wealth, pleasure, and salvation may be seen elsewhere; but whatever is not contained in this is not to be found anywhere.’”