The Messenger of Allah ﷺ was asked about a man who finds wetness but does not remember having a wet dream. He said, "He must perform a full bath."He was also asked about a man who dreams that he had a wet dream but finds no wetness. He said, "There is no bath required of him."Umm Sulaym then asked, "If a woman experiences this, must she perform a full bath?"He replied, "Yes. Women are indeed the counterparts of men."
حدثنا قتيبة بن سعيد حدثنا حماد بن خالد الخياط حدثنا عبد الله العمري عن عبيد الله عن القاسم
سئل رسول الله ﷺ عن الرجل يجد البلل ولا يذكر احتلاما قال يغتسل وعن الرجل يرى أنه قد احتلم ولا يجد البلل قال لا غسل عليه فقالت أم سليم المرأة ترى ذلك أعليها غسل قال نعم إنما النساء شقائق الرجال
[Isnad daif] Tirmidhi narrated it, chapter on Purification, section on one who wakes up and sees wetness but does not remember a wet dream, hadith no. 113, and Ibn Majah, hadith no. 612, from the hadith of Hammad bin Khalid through this route.Tirmidhi said, "Yahya bin Saeed weakened Abdullah on account of his memory, and part of the hadith has supporting evidence."