Muwatta Malik
Hadith #115
Yahya related to me from Malik from Ibn Shihab from Urwa ibn az- Zubayr that Umm Sulayman said to the Messenger of Allah, may Allah bless him and grant him peace, ""Should a woman do ghusl when she experiences the same as a man in her sleep?"" The Messenger of Al lah said to her, ""Yes, she should do ghusl. ""A'isha said to her, ""Shame on you! Does a woman see that?"" (i.e. a liquid.) The Messenger of Allah, may Allah bless him and grant him peace, said to her, ""May your right hand be full of dust. From where does family resemblance come?