Al-Maidah 5:6 يا ايها الذين امنوا اذا قمتم الى الصلاة فاغسلوا وجوهكم وايديكم الى المرافق وامسحوا برءوسكم وارجلكم الى الكعبين وان كنتم جنبا فاطهروا وان كنتم مرضى او على سفر او جاء احد منكم من الغايط او لامستم النساء فلم تجدوا ماء فتيمموا صعيدا طيبا فامسحوا بوجوهكم وايديكم منه ما يريد الله ليجعل عليكم من حرج ولاكن يريد ليطهركم وليتم نعمته عليكم لعلكم تشكرون ٦

O you who believe, when you rise for Salāh, (prayer) wash your faces and your hands up to the elbows, and make MasH (wiping by hands) of your heads and (wash) your feet up to the ankles. If you are in a state of major impurity, cleanse yourselves well (by taking bath). If you are sick, or on a journey, or if one of you has come after relieving himself, or you have had sexual contact with women, and you find no water, then, go for some clean dust and wipe your faces and hands with it. Allah does not like to impose a problem on you; He, rather likes to cleanse you and to complete His favour upon you, so that you may be grateful.