A person suffers from a disease which prevents him from using water

Q: A man with a swollen hand had a wet dream during his sleep. What should he do if he is unable to take Ghusl (ritual bath following major ritual impurity)?

A: All praise be to Allah Alone, and peace and blessings be upon His Messenger, and his family and Companions. When a person is unable to use water or is harmed by using it due to an illness, he is allowed to perform Tayammum (dry ablution with clean earth) when major and minor ritual impurity take place. This ruling applies to a person who has a wet dream while sleeping if he is unable to use water or is harmed by using it. (Part No. 5; Page No. 345) If it is possible for him to wash some parts of his body and apply Tayammum to the others depending on his case and capability, he should do so, for Allah (Exalted be He) says (what means): So keep your duty to Allâh and fear Him as much as you can The Prophet (peace be upon him) said: “When I command you to do something, do as much of it as you can.” May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.