Ibn 'Umar (RAA) narrated that The Messenger of Allah (ﷺ) saw a woman who was killed in one of his expeditions, so he disapproved the killing of women and children. Agreed upon. (RU)
English reference (RU): Book 11, Hadith 1313 (RU)
Arabic reference (RU): Book 11, Hadith 1286 (RU)