Quran 50, Qaf (Qaf)

50:29The sentence that cometh from Me cannot be changed, and I am in no wise a tyrant unto the slaves.

مَا يُبَدَّلُ الْقَوْلُ لَدَيَّ وَمَا أَنَا بِظَلَّامٍ لِلْعَبِيدِ