Mishkat al-Masabih #408

‘A'isha reported that when God’s messenger was asked about a man who noticed moisture but did not remember having had a dream, he said that he must wash; but when asked about a man who thought he had had a dream but noticed no moisture, he said that he did not require to wash. Umm Sulaim asked whether a woman must wash when she experienced that, and he replied, “Yes, women are of the same nature as men.” Tirmidhi and Abu Dawud transmitted it, and Darimi and Ibn Majah transmitted it up to “he did not require to wash.”