88:24

فَيُعَذِّبُهُ اللَّهُ الْعَذَابَ الْأَكْبَرَ

Transliteration:

FayuAAaththibuhu Allahu alAAathaba al-akbara

Word by Word:

Then will punish him Allah (with) the punishment greatest.

Translations:

him will God cause to suffer the greatest suffering [in the life to come]:

God will punish him with a mighty Punishment,

Allah will punish him with direst punishment.

Allah will chastise him with the greatest chastisement.

Then Allah will punish him with the greatest punishment.