Verse 18

قَدْ يَعْلَمُ ٱللَّهُ ٱلْمُعَوِّقِينَ مِنكُمْ وَٱلْقَآئِلِينَ لِإِخْوَٰنِهِمْ هَلُمَّ إِلَيْنَا وَلَا يَأْتُونَ ٱلْبَأْسَ إِلَّا قَلِيلًا

Say, God knows the naysayers amongst you who are saying to their brethren come and join us. And they do not fight, except very few.