O true believers, when ye prepare your selves to pray, wash your faces, and your hands unto the elbows; and rub your heads, and your feet unto the ancles; and if ye be polluted by having lain with a woman, wash your selves all over. But if ye be sick, or on a journey, or any of you cometh from the privy, or if ye have touched women, and ye find no water, take fine clean sand, and rub your faces and your hands therewith; God would not put a difficulty upon you; but he desireth to purify you, and to complete his favour upon you, that ye may give thanks.