The scholars differed regarding the Shariah regarding the sick person who finds water and is afraid to use it. Some say that it is permissible for him to perform tayammum, and I say that he does not have to repeat it. And some say that he should not perform tayammum in the presence of water. It is the same for the sick person and the one who is afraid. Some say that it is permissible for him to perform tayammum and repeat the prayer if he finds water. It is said that he performs tayammum, and if he finds water before the time ends, he performs ablution and repeats it, but if he finds it after the time ends, he does not have to repeat it.