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

Yahya related to me from Malik from Nafi from Ibn Umar that theMessenger of Allah, may Allah bless him and grant him peace, saw thecorpse of a woman who had been slain in one of the raids, and hedisapproved of it and forbade the killing of women and children. Translation Not Available

Book Ref: Muwatta Imam Malik Book 21 Hadith 970
Web Ref:  Muwatta Imam Malik Book 21 Hadith 9