O Believers! when ye address yourselves to prayer, wash your faces, and your hands up to the elbow, and wipe your heads, and your feet to the ankles. And if ye have become unclean, then purify yourselves. But if ye are sick, or on a journey, or if one of you come from the place of retirement, or if ye have touched women, and ye find no water, then take clean sand and rub your faces and your hands with it. God desireth not to lay a burden upon you, but he desireth to purify you, and He would fill up the measure of His favour upon you, that ye may be grateful.