حَدَّثَنَا إِسْحَاقُ بْنُ سُلَيْمَانَ حَدَّثَنَا مَالِكٌ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ رَأَى فِي بَعْضِ مَغَازِيهِ امْرَأَةً مَقْتُولَةً فَأَنْكَرَ ذَلِكَ وَنَهَى عَنْ قَتْلِ النِّسَاءِ وَالصِّبْيَانِ
مسند امام احمد بن حنبل · Hadith 5458
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 denounced that and forbade the killing of women and children.
Sanad
حَدَّثَنَا إِسْحَاقُ بْنُ سُلَيْمَانَ حَدَّثَنَا مَالِكٌ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ