Rigveda+AranyakaLR

Each of these two Brahmanas is supplemented by a forest book, or Aranyaka. The Aranyaka is not a uniform production. It consists of five books, three of which, the first and the last two, are of a liturgical nature, treating of the ceremony called mahavrta or great vow. The last of these books is, doubtless of later origin, and is ascribed by Hindu authorities either to Shaunaka or to Ashvalayana. The second and third books, on the other hand, are purely speculative.