Al Sa’b bin Jaththamah said that he asked the Messenger of Allah(ﷺ) about the polytheists whose settlemnst were attacked at night when some of their offspring and women were smitten. The Prophet(ﷺ) “They are of them. ‘Amr bin Dinar used to say “they are regarded in the same way as their parents.” Al-Zuhri said: Thereafter the Messenger of Allah (ﷺ) prohibited to kill women and children.
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا أَحْمَدُ بْنُ عَمْرِو بْنِ السَّرْحِ، حَدَّثَنَا سُفْيَانُ، عَنِ الزُّهْرِيِّ، عَنْ عُبَيْدِ اللَّهِ، - يَعْنِي ابْنَ عَبْدِ اللَّهِ - عَنِ ابْنِ عَبَّاسٍ، عَنِ الصَّعْبِ بْنِ جَثَّامَةَ، أَنَّهُ سَأَلَ النَّبِيَّ صلى الله عليه وسلم عَنِ الدَّارِ مِنَ الْمُشْرِكِينَ يُبَيَّتُونَ فَيُصَابُ مِنْ ذَرَارِيِّهِمْ وَنِسَائِهِمْ . فَقَالَ النَّبِيُّ صلى الله عليه وسلم " هُمْ مِنْهُمْ " . وَكَانَ عَمْرٌو - يَعْنِي ابْنَ دِينَارٍ - يَقُولُ هُمْ مِنْ آبَائِهِمْ . قَالَ الزُّهْرِيُّ ثُمَّ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم بَعْدَ ذَلِكَ عَنْ قَتْلِ النِّسَاءِ وَالْوِلْدَانِ .
sunnah.com