Ali 'Imran 3:167

WaliyaAAlama allatheena nafaqoowaqeela lahum taAAalaw qatiloo fee sabeeli Allahiawi idfaAAoo qaloo law naAAlamu qitalan lattabaAAnakumhum lilkufri yawma-ithin aqrabu minhum lil-eemaniyaqooloona bi-afwahihim ma laysa fee quloobihim wallahuaAAlamu bima yaktumoon

And that He might make evident those who are hypocrites. For it was said to them, "Come, fight in the way of Allāh or [at least] defend." They said, "If we had known [there would be] battle, we would have followed you." They were nearer to disbelief that day than to faith, saying with their mouths what was not in their hearts. And Allāh is most knowing of what they conceal -

and in order to know those who are hypocrites. It was said to them, “Come on, fight in the way of Allah, or defend.” They said, “Had we known it to be a fight we would have certainly followed you.” That day, they were nearer to disbelief than they were to Belief. They utter from their mouths what is not in their hearts. Allah knows well what they conceal.