﴿ وَقَالُوا۟ لَوْلَآ أُنزِلَ عَلَيْهِ مَلَكٌۭ ۖ وَلَوْ أَنزَلْنَا مَلَكًۭا لَّقُضِىَ ٱلْأَمْرُ ثُمَّ لَا يُنظَرُونَ ﴾

“They are saying, too, "Why has not an angel (visibly] been sent down unto him?" But had we sent down an angel, all would indeed have been decided, and they would have been allowed no further respite [for repentance.”

And they say ‘Why has an angel not been sent down to him?’ to Muhammad (s) 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 God’s custom in dealing with those before them destroying them when they disbelieve after their request is granted.