20:127
وَكَذَٰلِكَ نَجْزِى مَنْ أَسْرَفَ وَلَمْ يُؤْمِنۢ بِـَٔايَـٰتِ رَبِّهِۦ ۚ وَلَعَذَابُ ٱلْـَٔاخِرَةِ أَشَدُّ وَأَبْقَىٰٓ
wakadhālika najzī man asrafa walam yu'min biāyāti rabbihi walaʿadhābu l-ākhirati ashaddu wa-abqā
This is how We reward those who go too far, and who do not believe in their Lord’s revelations. The greatest and most enduring punishment is in the Hereafter.
And thus do We requite him who transgresses beyond bounds [i.e. commits the great sins and disobeys his Lord (Allâh) and believes not in His Messengers, and His revealed Books, like this Qur’an], and believes not in the Ayât (proofs, evidence, verses, lessons, signs, revelations, etc.) of his Lord; and the torment of the Hereafter is far more severe and more lasting.