﴿ وَأَنزَلَ ٱلَّذِينَ ظَٰهَرُوهُم مِّنْ أَهْلِ ٱلْكِتَٰبِ مِن صَيَاصِيهِمْ وَقَذَفَ فِى قُلُوبِهِمُ ٱلرُّعْبَ فَرِيقًۭا تَقْتُلُونَ وَتَأْسِرُونَ فَرِيقًۭا ﴾

“and He brought down from their strongholds those of the followers of earlier reve­lation who had aided the aggressors, and cast terror into their hearts: some you slew, and some you made captive;”

Please check ayah 33:27 for complete tafsir.