Here is the Prophet ﷺ telling us we will conquer Rome and Persia, who does he think he is? Look at these people around us: they recite the Qur'an, but they are cowardly and fatten their bellies.
You are lying, O enemy of Allah! And I will tell the Prophet ﷺ what you said.
The munafiqun are terrified that Allah will reveal something that will expose what is in their hearts. If you were to ask them why they are saying this, they will say, We were only talking idly and joking around. Say: are you laughing and joking about Allah, His revelations, and His Messenger? Make no excuses. You have committed kufr after your Iman.
Recited as revelation was concluding, just as the accused hypocrite ran up to offer an excuse: the Qur'an named what he was about to say before he could finish it; the Prophet ﷺ recited on without even looking at him.
I saw this munafiq running behind the camel of the Prophet ﷺ, holding on to the stirrup and being dragged, and the Prophet ﷺ would not even look at him. He just kept repeating: make no excuses, you have committed kufr after your Iman.