Sayyidah Umm Sulaym (may Allah be pleased with her) said: I lived as a neighbour of Sayyidah Umm Salamah (may Allah be pleased with her), the wife of the Prophet (peace and blessings be upon him). Once Sayyidah Umm Sulaym (may Allah be pleased with her) said: "O Messenger of Allah! What is your view: if a woman sees in a dream that her husband is having intercourse with her, must she take a ritual bath (ghusl)?" Sayyidah Umm Salamah (may Allah be pleased with her) said: "O Umm Sulaym! May your hands be covered in dust! You have put the women to shame before the Messenger of Allah." Sayyidah Umm Sulaym (may Allah be pleased with her) said: "Indeed, Allah Almighty is not shy of the truth. That we ask the Prophet (peace and blessings be upon him) about whatever difficulty we face is better than our remaining ignorant of it." The Prophet (peace and blessings be upon him) said: "O Umm Sulaym! May your hands be covered in dust! Such a woman must take a ritual bath when she finds water (i.e., discharge)." Sayyidah Umm Salamah (may Allah be pleased with her) said: "O Messenger of Allah! Does a woman also have water?" The Prophet (peace and blessings be upon him) said: "Then for what other reason does her child resemble her? These women are the counterparts of men."
Ahmad recorded it, and it is in the Sahih in abridged form. In Ahmad's chain there is a break (inqita') between Sayyidah Umm Sulaym (may Allah be pleased with her) and the narrator Ishaq bin Abdullah bin Abi Talhah. Other hadiths on this subject will come in the chapters on purification and on wet dreams, if Allah wills.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب العلم / 754
Hadith Gradingمحدثین:إسنادہ ضعیف
Hadith Takhrij«اخرجه الامام احمد فى مسنده 6/377 اخرجه الامام الطبراني فى معجمه الكبير 127/25 اورده المؤلف فى زوائد المسند 212 ، أخرجه مسند أحمد برقم: 26577، وأخرجه موطأ مالك برقم: 118، وأخرجه فتح الباري برقم: 278»