Saying "On the impulse of God the Light-giver thee," he takes the sword, for impelling. "With the arms of the Ashvins," he says, for the Ashvins were the Adhvaryus of the angels. "With the hands of the Nourisher," he says, for restraint. "Thou art a hundred-edged, of the tree, slayer of the foe," he says; thus he sharpens the bolt. He throws away the grass with a Yajus. The earth is the size of the altar; thus he sets apart so much of it. He throws it away thrice; these worlds are three. He throws it silently a fourth time, for the unmeasured. He uproots it; thus what of it is impure he cuts off. He uproots it; therefore the plants perish. If dug too deep, it has the ancestors for its object; so much does he dig as is measured by the Creator as the mouth of the sacrifice. He digs until he reaches support; thus he causes the sacrificer to reach support. He makes it higher on the south; thus he makes it the form of the sacrificial ground. He makes it full of loose earth; loose earth is offspring and cattle; thus he makes him full of offspring and cattle. He performs the second drawing of a boundary. The earth is the size of the altar; having set apart so much of it, he performs the second drawing of a boundary for himself. "Thou art the holder, thou art the self-holder," it is made smooth, for healing. He places the sprinkling waters; the waters are cleansing; they serve for removing evil. He places them in the path made by the sword, for the continuity of the sacrifice.