AL AHZAB — Ayat 62

سُنَّةَ اللَّهِ فِي الَّذِينَ خَلَوْا مِن قَبْلُ وَلَن تَجِدَ لِسُنَّةِ اللَّهِ تَبْدِيلًا

[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.