Surah Al-Kahf — Ayah 87 (18:87)
قَالَ أَمَّا مَن ظَلَمَ فَسَوۡفَ نُعَذِّبُهُۥ ثُمَّ يُرَدُّ إِلَىٰ رَبِّهِۦ فَيُعَذِّبُهُۥ عَذَابٗا نُّكۡرٗا ٨٧
English translation (Saheeh International)
He said, "As for one who wrongs,1 we will punish him. Then he will be returned to his Lord, and He will punish him with a terrible punishment [i.e., Hellfire].
- - Persists in disbelief and rebellion.
Brief commentary
Dhu’l-Qarnayn said: “As for the one who associates partners with Allah and persists in this, I shall punish him by killing him in this life, then he will return to his Lord on the Day of Judgment and He shall then punish him with a terrible punishment.