When a person performs tayammum for wudu (ablution), he should strike his hands on the earth once, shake them off, and then wipe his forehead and eyebrows, and then the backs of his hands. If the tayammum is for janabah (major ritual impurity), he should strike his hands on the earth once, shake them off, and wipe his forehead and eyebrows. Then, he strikes his hands on the earth again, wipes the backs of his hands up to a little above the wrists, and starts by wiping the right hand before the left.