Hadith no. 279 is a repeat. Read it here.
(the mother of the believers) Um Sulaim, the wife of Abu Talha, came to Allah’s Apostle and said, “O Allah’s Apostle! 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)?” Allah’s Apostle replied, “Yes, if she notices a discharge.”
- Yes, women can have wet dreams as well.
- If discharge is noticed, taking a bath (that of Janaba) is compulsory.
- The discharge noticed has to be due to a dream (while sleeping). Getting it while being awake does not have the same ruling.
Narrated Abu Said Al-Khud:
Allah’s Apostle sent for a Ansari man who came with water dropping from his head. The Prophet said, “Perhaps we have forced you to hurry up, haven’t we?” The Ansari replied, “Yes.” Allah’s Apostle further said, “If you are forced to hurry up (during intercourse) or you do not discharge then ablution is due on you (This order was cancelled later on, i.e. one has to take a bath).
Cancellation of an order = abrogation. Read more on it here.
Even if there is no discharge, one has to take a bath.