﴿ لَيْسَ لَكَ مِنَ ٱلْأَمْرِ شَىْءٌ أَوْ يَتُوبَ عَلَيْهِمْ أَوْ يُعَذِّبَهُمْ فَإِنَّهُمْ ظَٰلِمُونَ ﴾

“[And] it is in no wise for thee [O Prophet] to decide whether He shall accept their repentance or chastise them - for, behold, they are but wrongdoers,”

Please check ayah 3:129 for complete tafsir.