قُل لِلَّذينَ كَفَروا إِن يَنتَهوا يُغفَر لَهُم ما قَد سَلَفَ وَإِن يَعودوا فَقَد مَضَت سُنَّتُ الأَوَّلينَ

Tell the disbelievers: if they desist, what has passed will be forgiven them. But if they resume, the precedent of the ancients has already been established.