﴿ فَأَصَابَهُمْ سَيِّـَٔاتُ مَا عَمِلُوا۟ وَحَاقَ بِهِم مَّا كَانُوا۟ بِهِۦ يَسْتَهْزِءُونَ ﴾

“for all the evil that they had done fell [back] upon them, and they were overwhelmed by the very thing which they had been wont to deride.”

So that the evils of what they did smote them that is the requital of these evil things smote them and there besieged it was sent down against them that which they used to mock namely the chastisement.