وَالْمُحْصَنَـتُ مِنَ النِّسَآءِ إِلاَّ مَا مَلَكْتَ أَيْمَـنُكُمْ كِتَـبَ اللَّهِ عَلَيْكُمْ وَأُحِلَّ لَكُمْ مَّا وَرَاءَ ذَلِكُمْ أَن تَبْتَغُواْ بِأَمْوَلِكُمْ مُّحْصِنِينَ غَيْرَ مُسَـفِحِينَ فَمَا اسْتَمْتَعْتُمْ بِهِ مِنْهُنَّ فَـَاتُوهُنَّ أُجُورَهُنَّ فَرِيضَةً وَلاَ جُنَاحَ عَلَيْكُمْ فِيمَا تَرَاضَيْتُمْ بِهِ مِن بَعْدِ الْفَرِيضَةِ إِنَّ اللَّهَ كَانَ عَلِيماً حَكِيماً
24. Also (forbidden are) women already married, except those (slaves) whom your right hands possess. Thus has Allah ordained for you. All others are lawful, provided you seek them (with a dowry) from your property, desiring chastity, not fornication. So with those among them whom you have enjoyed, give them their required due, but if you agree mutually (to give more) after the requirement (has been determined), there is no sin on you. Surely, Allah is Ever All-Knowing, All-Wise. Allah said,