I left my house one morning to do some errand, and when the time for Zuhr approached, I remembered that I had had a wet dream whilst I was asleep after Fajr prayer, and I was now junub but unable to do ghusl. So I did tayammum in order to purify myself of major impurity, then I did wudoo
If a person has an erotic dream and emits semen (maniy), then he has to do ghusl and it is not permissible for him to do tayammum instead, unless there is no water available or he is afraid that he may be harmed by using water, because Allaah, may He be exalted, says (interpretation of the meaning):
