The purification performed in the absence of water

The purification performed in the absence of water is called "Tayammum" in Islamic tradition. It is a ritual purification method that is used when water is not available, or when using water may cause harm or illness. Tayammum involves using clean earth or dust to perform a symbolic cleansing of the body and face. The process includes striking the earth or dust with one's hands, then wiping the face and hands with the dust. This is done in a specific manner, following a set of instructions prescribed by Islamic law. Tayammum is considered a valid alternative to the use of water for purification before prayer, as long as water is not available or its use is harmful. It is an important part of Islamic practice and is used by millions of Muslims around the world.