رَّبُّكُمْ أَعْلَمُ بِكُمْ ۖ إِن يَشَأْ يَرْحَمْكُمْ أَوْ إِن يَشَأْ يُعَذِّبْكُمْ ۚ وَمَآ أَرْسَلْنَـٰكَ عَلَيْهِمْ وَكِيلًا
Your Lord knows you best. He will have mercy on you if He wishes, or punish you, if He wishes, and We did not send you to watch over them.