She asked the Messenger of Allah ﷺ about a woman who sees in her dream what a man sees.He replied, "She is not required to perform ghusl unless she experiences a discharge, just as a man is not required to perform ghusl unless he experiences a discharge."
حدثنا أبو بكر بن أبي شيبة وعلي بن محمد قالا حدثنا وكيع عن سفيان عن علي بن زيد عن سعيد بن المسيب
أنها سألت رسول الله ﷺ عن المرأة ترى في منامها ما يرى الرجل فقال ليس عليها غسل حتى تنزل كما أنه ليس على الرجل غسل حتى ينزل
[Its chain of transmission is daif] Ahmad narrated it (6/409) from Waki, through this route. Ali bin Zayd was mentioned previously, hadith 116, and Ata Khurasani corroborated him, as found in Nasai (1/115, hadith 198). Ata used to practice tadlis, as stated in Taqrib and other works, and I did not find an explicit statement that he heard it directly. The preceding hadith, 601, makes this one unnecessary.