15:50
وَأَنَّ عَذَابِى هُوَ ٱلْعَذَابُ ٱلْأَلِيمُ
wa-anna ʿadhābī huwa l-ʿadhābu l-alīmu
And that it is My punishment which is the painful punishment.
— Saheeh International
but My torment is the truly painful one.
— M. A. S. Abdel Haleem
And that My Torment is indeed the most painful torment.
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali