Qaf - 50:29

مَا يُبَدَّلُ الْقَوْلُ لَدَيَّ وَمَا أَنَا بِظَلَّامٍ لِّلْعَبِيدِ
[50:29]
My word shall not be changed, nor am I in the least unjust to the servants.
"The Word changes not before Me, and I do not the least injustice to My Servants."
The sentence that cometh from Me cannot be changed, and I am in no wise a tyrant unto the slaves.