وَعَنْ اِبْنِ عُمَرَ رَضِيَ اَللَّهُ عَنْهُمَا;
«أَنَّ رَسُولَ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ رَأَى اِمْرَأَةً مَقْتُولَةً فِي بَعْضِ مَغَازِيهِ، فَأَنْكَرَ قَتْلَ اَلنِّسَاءِ وَالصِّبْيَانِ»
The Messenger of Allah (sallallahu alayhi wa sallam) saw a woman who was killed in one of his expeditions, so he disapproved the killing of women and children. Agreed upon.