Muwatta Imam Malik Book of Jihad, Hadith 9

Yahya related to me from Malik from Nafi from Ibn Umar that the Messenger of Allah ﷺ saw the corpse of a woman who had been slain in one of the raids, and he disapproved of it and forbade the killing of women and children.

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ ﷺ رَأَى فِي بَعْضِ مَغَازِيهِ امْرَأَةً مَقْتُولَةً فَأَنْكَرَ ذَلِكَ وَنَهَى عَنْ قَتْلِ النِّسَاءِ وَالصِّبْيَانِ .