Whenever water is not available or water is just enough for drinking or the water is unhealthy,in such situation tayammum
(dry ablution)can be performed
1)Place the palm of both hands on clean earth or dust eg;wall or stone.
2)Then blow into your palms.
3)Wipe the palms of both your hands over the face.
4)In the last wipe your right palm with your left palm.
5)Make du,A;.