The deciduous herbs, animals, trees, creepers, clarified butter, milk, curds, meat and other selected things land, the points of the horizon, faith, and time which forms the twelfth, the Richs, the Yajushes, the Samans, and the sacrificer himself froming the sixteenth, and Fire which should be known as the householder, these seventeen are said to be the linbs of Sacrifice. Sacrifice, the Shruti says, is the root of the world and its movement. With clarified butter, milk, curds, dung, curds mixed with milk, skin, the hair in her tail, horns, and hoofs, the cow alone is able to supply all the necessaries of sacrifice. For particular sacrifices are sanctioned particular ones, Ritwijas and presents together sustain Sacrifices. By collecting these things together, people celebrate sacrifices.