حَدَّثَنِي عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ عُرْوَةَ بْنِ الزُّبَيْرِ، أَنَّ أُمَّ سُلَيْمٍ، قَالَتْ لِرَسُولِ اللَّهِ صلى الله عليه وسلم الْمَرْأَةُ تَرَى فِي الْمَنَامِ مِثْلَ مَا يَرَى الرَّجُلُ أَتَغْتَسِلُ فَقَالَ لَهَا رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ نَعَمْ فَلْتَغْتَسِلْ ‏"‏ ‏.‏ فَقَالَتْ لَهَا عَائِشَةُ أُفٍّ لَكِ وَهَلْ تَرَى ذَلِكَ الْمَرْأَةُ فَقَالَ لَهَا رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ تَرِبَتْ يَمِينُكِ وَمِنْ أَيْنَ يَكُونُ الشَّبَهُ ‏"‏ ‏.‏

Yahya related to me from Malik from Ibn Shihab from Urwa ibn az-Zubayr that Umm Sulayman said to the Messenger of Allah, may Allahbless him and grant him peace, "Should a woman do ghusl when sheexperiences the same as a man in her sleep?" The Messenger of Al lahsaid to her, "Yes, she should do ghusl. "A'isha said to her, "Shame onyou! 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 righthand be full of dust. From where does family resemblance come?" Translation Not Available

Book Ref: Muwatta Imam Malik Book 2 Hadith 116
Web Ref:  Muwatta Imam Malik Book 2 Hadith 86