What about the children of polytheists killed by the cavalry during the night raid? He said: They are from them. (Using translation from Muslim 1745c)  

أَنَّ النَّبِيَّ ﷺ «قِيلَ لَهُ لَوْ أَنَّ خَيْلًا أَغَارَتْ مِنَ اللَّيْلِ فَأَصَابَتْ مِنْ أَبْنَاءِ الْمُشْرِكِينَ؟» قَالَ «هُمْ مِنْ آبَائِهِمْ»  

[Machine] He heard the Messenger of Allah ﷺ say, "There is no protection except for Allah and His Messenger." He was asked about a group who gather at night and harm children, he said, "They are from them."  

أَنَّهُ سَمِعَ رَسُولَ اللهِ ﷺ يَقُولُ «لَا حِمَى إِلَّا لِلَّهِ وَلِرَسُولِهِ وَسُئِلَ عَنِ الْقَوْمِ يُبَيَّتُونَ فَيُصِيبُونَ الْوِلْدَانَ» قَالَ «هُمْ مِنْهُمْ»