Volume 1, Book 3, Number 132:
Narrated Um Salama:
Um-Sulaim came to Allah’s Apostle 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 Al –
lah’s Apostle! Does a woman get a discharge?” He replied, “Yes, let your right hand be in dust (An Ar –
abic 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.”