Anlam tercümesi Ayet 87 Sure Sûratu'l-Kehf - الترجمة الإنجليزية - د. وليد بليهش العمري - Kur'an-ı Kerim Ansiklopedisi

Ayet: 87

قَالَ أَمَّا مَن ظَلَمَ فَسَوۡفَ نُعَذِّبُهُۥ ثُمَّ يُرَدُّ إِلَىٰ رَبِّهِۦ فَيُعَذِّبُهُۥ عَذَابٗا نُّكۡرٗا

(87) He said: “He who committed injustice^[3924], we shall punish. Then he is returned to his Lord and He would subject him to an unheard of Punishment!^[3925]”

[3924] That is the ‘injustice’ of Denial (cf. Abū Ḥayyān). Meaning here the people who insist on Denying after the Truth has been made plain to them (cf. al-Ṭabarī, al-Bayḍāwī, Ibn Kathīr).
Notice the word ‘injustice’ is used again here to describe the action of Denial (cf. note on Aya 8 above).
[3925] They will be subjected to such a horrid Punishment that no one had experienced the like of which before (nukran). This for their ingratitude to God Almighty and using the blessings He bestowed on them to worship others besides Him (cf. al-Biqāʿī, Naẓm al-Durar).