Al-Anfal - 8:58

وَإِمَّا تَخَافَنَّ مِن قَوْمٍ خِيَانَةً فَانبِذْ إِلَيْهِمْ عَلَى سَوَاء إِنَّ اللّهَ لاَ يُحِبُّ الخَائِنِينَ
[8:58]
And if you fear treachery on the part of a people, then throw back to them on terms of equality; surely Allah does not love the treacherous.
If thou fearest treachery from any group, throw back (their covenant) to them, (so as to be) on equal terms: for Allah loveth not the treacherous.
And if thou fearest treachery from any folk, then throw back to them (their treaty) fairly. Lo! Allah loveth not the treacherous.