Sahih Bukhari

Narrated Um Salama:Um-Sulaim came to Allah's Messenger (ﷺ) and said, ""Verily, Allah is not shy of (telling you) the truth. Is it necessary for a woman to take a bath after she has a wet dream (nocturnal sexual discharge?) The Prophet replied, ""Yes, if she notices a discharge."" Um Salama, then covered her face and asked, ""O Allah's Messenger (ﷺ)! Does a woman get a discharge?"" He replied, ""Yes, let your right hand be in dust (An Arabic expression you say to a person when you contradict his statement meaning ""you will not achieve goodness""), and that is why the son resembles his mother