Can you please tell me the way to do wudhu without water?
Wudhu is valid only with water. Wudhu cannot be done without water. However, if someone is in such a place where there is no water up to distance of one mile or he is sick and the use of water is harmful for him to an extent that he cannot do wudhu, or by using hot water or cold water he may turn ill or it is feared that his illness shall increase, then in such conditions a person can do tayammum [dry wudhu] instead of wudhu.
The method of tayammum is that both the hand palms are stricken against the earth or dust after making intention and then both the hands are passed over the whole face after that both the hands are stricken again on the earth or dust and both the hands are passed over both the hands up to elbow.
Note: If any sick person wants to do tayammum for wudhu, he should ask the ruling by telling his condition.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband