Probability of killing the babies and children

Narrated As-Sab bin Jaththama:

The Prophet ﷺ passed by me at a place called Al-Abwa or Waddan, and was asked whether it was permissible to attack the pagan warriors at night with the probability of exposing their women and children to danger. The Prophet replied, "They (i.e. women and children) are from them (i.e. pagans)." I also heard the Prophet saying, "The institution of Hima is invalid except for Allah and His Apostle."

حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا سُفْيَانُ، حَدَّثَنَا الزُّهْرِيُّ، عَنْ عُبَيْدِ اللَّهِ، عَنِ ابْنِ عَبَّاسٍ، عَنِ الصَّعْبِ بْنِ جَثَّامَةَ ـ رضى الله عنهم ـ قَالَ مَرَّ بِيَ النَّبِيُّ ﷺ بِالأَبْوَاءِ ـ أَوْ بِوَدَّانَ ـ وَسُئِلَ عَنْ أَهْلِ الدَّارِ يُبَيَّتُونَ مِنَ الْمُشْرِكِينَ، فَيُصَابُ مِنْ نِسَائِهِمْ وَذَرَارِيِّهِمْ قَالَ " هُمْ مِنْهُمْ ". وَسَمِعْتُهُ يَقُولُ " لاَ حِمَى إِلاَّ لِلَّهِ وَلِرَسُولِهِ ﷺ ".