This was created by Agni, with the devas, sages and Vasishta. It is said that it contains 12000 granthas. According to its chapters 1, 272, it is supposed to be written and donated to brahmins on the full moon day of the Margashirsha month.
The work is supposed to have 420 chapters, and contains comments on the dashavatars, Ramayana, Mahbharata, ways of worshipping the devas, Devatapratishtaswapnamantra, astrology, vaastu, ayurveda, physiology, and many such subjects.