At-Tawbah 9:8

Kayfa wa-in yathharoo AAalaykumla yarquboo feekum illan wala thimmatan yurdoonakumbi-afwahihim wata/ba quloobuhum waaktharuhum fasiqoon

How [can there be a treaty] while, if they gain dominance over you, they do not observe concerning you any pact of kinship or covenant of protection? They satisfy you with their mouths, but their hearts refuse [compliance], and most of them are defiantly disobedient.

How (can they have a treaty) while if they overcome you, they will not observe any bond or treaty with you. They want to please you with (words of) their mouths, but their hearts refuse. Most of them are sinners.