Quran

 50:29

مَا يُبَدَّلُ الْقَوْلُ لَدَيَّ وَمَا أَنَا بِظَلَّامٍ لِلْعَبِيدِ ﴿٢٩﴾

29. The word will not be changed with Me, and I am not unjust to the servants.”