It was narrated from Umm Salamah that a woman said:
O Messenger of Allah, Allah is not shy to tell the truth. Does a women have to perform Ghusl if she has a wet dream? He said: Yes, if she sees water. [1] Umm Salamah laughed and said: Do women really have wet dreams? The Messenger of Allah (ﷺ) said: How else would her child resemble her? [1] That is, if she has an emission of the fluid of an orgasm.