Sahih al-Bukhari, Book 56, Hadith 223 (In-Book) ⓘ
Narrated `Abdullah: During some of the Ghazawat of the Prophet a woman was found killed. Allah's Messenger disapproved the killing of women and children.
حَدَّثَنَا أَحْمَدُ بْنُ يُونُسَ، أَخْبَرَنَا اللَّيْثُ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ ـ رضى الله عنه ـ أَخْبَرَهُ أَنَّ امْرَأَةً وُجِدَتْ فِي بَعْضِ مَغَازِي النَّبِيِّ صلى الله عليه وسلم مَقْتُولَةً، فَأَنْكَرَ رَسُولُ اللَّهِ صلى الله عليه وسلم قَتْلَ النِّسَاءِ وَالصِّبْيَانِ.
also referenced under: Hadith 3014 (DarusSalam) & Volume 4, Book 52, Hadith 257 (USC-MSA)