15:50

وَأَنَّ عَذَابِي هُوَ الْعَذَابُ الْأَلِيمُ

Transliteration:

Waanna AAathabee huwa alAAathabu al-aleemu

Word by Word:

And that My punishment, it (is) the punishment the most painful.

Translations:

and [also,] that the suffering which I shall impose [on sinners] will indeed be a suffering most grievous.

And that My Penalty will be indeed the most grievous Penalty.

And that My doom is the dolorous doom.

And that My chastisement -- that is the painful chastisement.

And that it is My punishment which is the painful punishment.