According to Vedic principles, bones and dung are generally considered very impure. If one touches a bone or stool, he must take a bath immediately. That is the Vedic injunction. Yet the Vedas also enjoin that a conchshell, although the bone of an animal, and cow dung, although the stool of an animal, are very sanctified. Even though such statements appear contradictory, on the basis of the Vedic version we still accept the fact that conchshells and cow dung are pure and sanctified.