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."
Explanation:
Ibn Qudamah (may Allah have mercy on him) said in Al-Mughni (1/130):
“If he thinks that he had a wet dream , but he did not find any Maniy, then he does not have to do Ghusl . Ibn Al-Mundhir (may Allah have mercy on him) said: All the scholars from whom I acquired knowledge unanimously agreed on this… If he wakes up and sees Maniy, but does not remember having a wet dream, then he must do Ghusl . We do not know of any difference of opinion concerning that either. Something similar to that was narrated from Umar and
Uthman, and Ibn Abbas (may Allah be pleased with them), and was also stated by
Ata’, Said ibn Jubayr, Ash-Sha
bi, An-Nakhai, Al-Hasan, Mujahid, Qatadah, Malik, Ash-Shafa
i, and Ishaq (may Allah have mercy on them), because what appears to be the case is that it was emitted during a wet dream, and he forgot.”, but he did not find any Maniy, then he does not have to do Ghusl . Ibn Al-Mundhir (may Allah have mercy on him) said: All the scholars from whom I acquired knowledge unanimously agreed on this… If he wakes up and sees Maniy, but does not remember having a wet dream, then he must do Ghusl . We do not know of any difference of opinion concerning that either. Something similar to that was narrated from Umar and
Uthman, and Ibn Abbas (may Allah be pleased with them), and was also stated by
Ata’, Said ibn Jubayr, Ash-Sha
bi, An-Nakhai, Al-Hasan, Mujahid, Qatadah, Malik, Ash-Shafa
i, and Ishaq (may Allah have mercy on them), because what appears to be the case is that it was emitted during a wet dream, and he forgot.”