سُنَّةَ اللَّهِ فِي الَّذينَ خَلَوا مِن قَبلُ ۖ وَلَن تَجِدَ لِسُنَّةِ اللَّهِ تَبديلًا

[This is] the established way of Allah with those who passed on before; and you will not find in the way of Allah any change.