سُنَّةَ اللّٰهِ فِىۡ الَّذِيۡنَ خَلَوۡا مِنۡ قَبۡلُۚ وَلَنۡ تَجِدَ لِسُنَّةِ اللّٰهِ تَبۡدِيۡلاً
This practice of Allah has (continued) through generations that have passed before, and you will never find any amendment in the way practised by Allah.