Surah Qaf, ayah 29

50:29

مَا يُبَدَّلُ ٱلۡقَوۡلُ لَدَيَّ وَمَآ أَنَا۠ بِظَلَّٰمٖ لِّلۡعَبِيدِ ٢٩

Mā yubaddalul-qawlu ladayya wamā ana bizallāmil lil-'abīd

The word [i.e., decree] will not be changed with Me, and never will I be unjust to the servants."