Surah Al-An'am 6:115

وَتَمَّتْ كَلِمَتُ رَبِّكَ صِدْقًا وَعَدْلًا ۚ لَّا مُبَدِّلَ لِكَلِمَـٰتِهِۦ ۚ وَهُوَ ٱلسَّمِيعُ ٱلْعَلِيمُ

And the word of your Lord has been fulfilled in truth and in justice. None can alter His words, and He is the Hearing, the Knowing.

Translation: Saheeh International

Tafsir

Perfected is the word of your Lord in the way of rulings and appointed terms in truthfulness and justice sidqan wa-‘adlan is for specification; none can change His words either by contravening His rulings or evading His appointed terms. He is the Hearing of what is said the Knowing of what is done.

Excerpt from Tafsir al-Jalalayn, commentary on 6:115, via Quran.com. The reader has the full commentary and 9 more tafsirs.