Mbh 1.1.11b

The mystery of the Veda, and what other subjects have been explained by me; the various rituals of the Upanishads with the Angas; the compilation of the Puranas and history formed by me and named after the three divisions of time, past, present, and future; the determination of the nature of decay, fear, disease, existence, and non-existence, a description of creeds and of the various modes of life; rule for the four castes, and the import of all the Puranas; an account of asceticism and of the duties of a religious student; the dimensions of the sun and moon, the planets, constellations, and stars, together with the duration of the four ages; the Rik, Sama and Yajur Vedas; also the Adhyatma; the sciences called Nyaya, Orthoephy and Treatment of diseases; charity and Pasupatadharma; birth celestial and human, for particular purposes; also a description of places of pilgrimage and other holy places of rivers, mountains, forests, the ocean, of heavenly cities and the kalpas; the art of war; the different kinds of nations and languages: the nature of the manners of the people; and the all-pervading spirit;--all these have been represented. But, after all, no writer of this work is to be found on earth.’