Bulugh al-Maram, Book 1, Hadith 133 (In-Book)

Narrated Anas (rad): Allah’s Messenger said about the precept of a woman having ejaculation during sleep like a man, “She should take a Ghusl (bath)”. [Agreed upon]

وَعَنْ أَنَسِ]بْنِ مَالِكٍ] ‏- رضى الله عنه ‏- قَالَ: { قَالَ رَسُولُ اَللَّهِ ‏- صلى الله عليه وسلم ‏-‏-فِي اَلْمَرْأَةِ تَرَى فِي مَنَامِهَا مَا يَرَى اَلرَّجُلُ‏- قَالَ: "تَغْتَسِلُ" } مُتَّفَقٌ عَلَيْه ِ (133)‏.‏ ‏2 ‏- عزوه للمتفق عليه وهم الحافظ ‏-رحمه الله‏- إذا الحديث لم يروه البخاري.‏

sunnah.com

also referenced under: Book 1, Hadith 119 (English)