And those who have no knowledge say: Why does not Allah speak to us or a sign come to us? Even thus said those before them, the like of what they say; their hearts are all alike. Indeed We have made the communications clear for a people who are sure.

Then did We raise up after him messengers to their people, so they came to them with clear arguments, but they would not believe in what they had rejected before; thus it is that We set seals upon the hearts of those who exceed the limits.

They will not fight against you in a body save in fortified towns or from behind walls; their fighting between them is severe, you may think them as one body, and their hearts are disunited; that is because they are a people who have no sense.