Surah Al-Anfal 8:71

وَإِن يُرِيدُوا۟ خِيَانَتَكَ فَقَدْ خَانُوا۟ ٱللَّهَ مِن قَبْلُ فَأَمْكَنَ مِنْهُمْ ۗ وَٱللَّهُ عَلِيمٌ حَكِيمٌ

But if they intend to betray you - then they have already betrayed Allāh before, and He empowered [you] over them. And Allāh is Knowing and Wise.

Translation: Saheeh International

Tafsir

And if they the captives desire to betray you through words which they speak to you they have betrayed God before before Badr through unbelief; but He has given you power over them at Badr through slaying and capture so let them anticipate the like if they return to betrayal; …

Excerpt from Tafsir al-Jalalayn, commentary on 8:71, via Quran.com. The reader has the full commentary and 9 more tafsirs.