In tastaftihoo faqad jaaa'akumul fathu wa in tantahoo fahuwa khairul lakum wa in ta'oodoo na'ud wa lan tughniya 'ankum fi'atukum shai'anw wa law kasurat wa annal laaha ma'al mu'mineen
If you [disbelievers] seek the victory - the defeat has come to you. And if you desist [from hostilities], it is best for you; but if you return [to war], We will return, and never will you be availed by your [large] company at all, even if it should increase; and [that is] because Allah is with the believers.