Narrated Zainab bint Um Salama: Um Sulaim said, O Allah's Apostle! Verily Allah is not shy of (telling you) the truth. Is it essential for a woman to take a bath after she had a wet dream (nocturnal sexual discharge)? He said, Yes, if she notices discharge. On that Um Salama laughed and said, Does a woman get a (nocturnal sexual) discharge? He said, How then does (her) son resemble her (his mother)?