Surat Al Anfal: (37-38)

{لِيَمِيزَ اللّهُ الْخَبِيثَ مِنَ الطَّيِّبِ وَيَجْعَلَ الْخَبِيثَ بَعْضَهُ عَلَىَ بَعْضٍ فَيَرْكُمَهُ جَمِيعاً فَيَجْعَلَهُ فِي جَهَنَّمَ أُوْلَـئِكَ هُمُ الْخَاسِرُونَ} [الأنفال: 37]

37- Allah shall differentiate believers from disbelievers and corrupt from reformers by Jihad and spending. Moreover, He shall gather the wicked and the corrupt together then make them over one another to cast them into Hell. Such people shall be losers in the world and in the Hereafter where they bought with their money the torture of the Hereafter, so they lost their funds and selves.

{قُل لِلَّذِينَ كَفَرُواْ إِن يَنتَهُواْ يُغَفَرْ لَهُم مَّا قَدْ سَلَفَ وَإِنْ يَعُودُواْ فَقَدْ مَضَتْ سُنَّةُ الأَوَّلِينِ} [الأنفال: 38]

38- O honorable Prophet, say to those disbelievers: If they cease their disbelief, stubbornness, and lying, and enter into Islam, Allah shall forgive for them their past sins. This includes their spending against Muslims in wars, and if they return to your opposition and fight, then Our Way in regard to those who lied and continued in their stubbornness is inventible which is punishing them.