8

And they say, 'Why has an angel not been sent down to him?', to Muhammad "sallallahu 'alayhi wa sallam" , to confirm his truthfulness; yet had We sent down an angel, as they have requested and if they then did not believe, the matter, that they be destroyed, would have been decreed, and then they would not be given any respite, they would [not] be given any extra time for repentance or an excuse, as is Allah’s custom [in dealing] with those before them, destroying them when they disbelieve after their request is granted.