Surah Al-Anfal, ayah 71

وَإِن يُرِيدُواْ خِيَانَتَكَ فَقَدۡ خَانُواْ ٱللَّهَ مِن قَبۡلُ فَأَمۡكَنَ مِنۡهُمۡۗ وَٱللَّهُ عَلِيمٌ حَكِيمٌ ٧١

Wa in yurīdū khiyānataka faqad khānullāha min qablu fa amkana minhum wallāhu 'alīmun hakīm

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.