وَإِمّا تَخافَنَّ مِن قَومٍ خِيانَةً فَانبِذ إِلَيهِم عَلىٰ سَواءٍ ۚ إِنَّ اللَّهَ لا يُحِبُّ الخائِنينَ

If you [have reason to] fear from a people betrayal, throw [their treaty] back to them, [putting you] on equal terms. Indeed, Allah does not like traitors.