Aal-'Imran - 3:128

لَيْسَ لَكَ مِنَ الأَمْرِ شَيْءٌ أَوْ يَتُوبَ عَلَيْهِمْ أَوْ يُعَذَّبَهُمْ فَإِنَّهُمْ ظَالِمُونَ
[3:128]
You have no concern in the affair whether He turns to them (mercifully) or chastises them, for surely they are unjust.
Not for thee, (but for Allah), is the decision: Whether He turn in mercy to them, or punish them; for they are indeed wrong-doers.
It is no concern at all of thee (Muhammad) whether He relent toward them or punish them; for they are evil-doers.