Surah Al-Fath, ayah 23

سُنَّةَ ٱللَّهِ ٱلَّتِي قَدۡ خَلَتۡ مِن قَبۡلُۖ وَلَن تَجِدَ لِسُنَّةِ ٱللَّهِ تَبۡدِيلٗا ٢٣

Sunnatallāhil-latī qad khalat min qablu walan tajida lisunnatillāhi tabdīlā

[This is] the established way of Allāh which has occurred before. And never will you find in the way of Allāh any change.