حَدَّثَنَا ابْنُ نُمَيْرٍ حَدَّثَنَا عُبَيْدُ اللَّهِ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ رَأَى فِي بَعْضِ مَغَازِيهِ امْرَأَةً مَقْتُولَةً فَنَهَى عَنْ قَتْلِ النِّسَاءِ وَالصِّبْيَانِ
مسند امام احمد بن حنبل · Hadith 4739
It was narrated from Ibn 'Umar that during one of his Campaigns, the Messenger of Allah (PBUH) saw a woman who had been slain, and he forbade the killing of women and children.
Sanad
حَدَّثَنَا ابْنُ نُمَيْرٍ حَدَّثَنَا عُبَيْدُ اللَّهِ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ