۞وَٱلۡمُحۡصَنَٰتُ مِنَ ٱلنِّسَآءِ إِلَّا مَا مَلَكَتۡ أَيۡمَٰنُكُمۡۖ كِتَٰبَ ٱللَّهِ عَلَيۡكُمۡۚ وَأُحِلَّ لَكُم مَّا وَرَآءَ ذَٰلِكُمۡ أَن تَبۡتَغُواْ بِأَمۡوَٰلِكُم مُّحۡصِنِينَ غَيۡرَ مُسَٰفِحِينَۚ فَمَا ٱسۡتَمۡتَعۡتُم بِهِۦ مِنۡهُنَّ فَـَٔاتُوهُنَّ أُجُورَهُنَّ فَرِيضَةٗۚ وَلَا جُنَاحَ عَلَيۡكُمۡ فِيمَا تَرَٰضَيۡتُم بِهِۦ مِنۢ بَعۡدِ ٱلۡفَرِيضَةِۚ إِنَّ ٱللَّهَ كَانَ عَلِيمًا حَكِيمٗا
(Also prohibited are) the women already bound in marriage, except the bondwomen you come to own. It has been written by Allah for you. All (women), except these, have been permitted for you to seek (to marry) through your wealth, binding yourself, (in marriage) and not only for lust. So, to those of them whose company you have enjoyed, give their dues (dower) as obligated. There is no sin on you in what you mutually agree upon after the (initial) agreement. Surely, Allah is All-Knowing, All-Wise.
وَمَن لَّمۡ يَسۡتَطِعۡ مِنكُمۡ طَوۡلًا أَن يَنكِحَ ٱلۡمُحۡصَنَٰتِ ٱلۡمُؤۡمِنَٰتِ فَمِن مَّا مَلَكَتۡ أَيۡمَٰنُكُم مِّن فَتَيَٰتِكُمُ ٱلۡمُؤۡمِنَٰتِۚ وَٱللَّهُ أَعۡلَمُ بِإِيمَٰنِكُمۚ بَعۡضُكُم مِّنۢ بَعۡضٖۚ فَٱنكِحُوهُنَّ بِإِذۡنِ أَهۡلِهِنَّ وَءَاتُوهُنَّ أُجُورَهُنَّ بِٱلۡمَعۡرُوفِ مُحۡصَنَٰتٍ غَيۡرَ مُسَٰفِحَٰتٖ وَلَا مُتَّخِذَٰتِ أَخۡدَانٖۚ فَإِذَآ أُحۡصِنَّ فَإِنۡ أَتَيۡنَ بِفَٰحِشَةٖ فَعَلَيۡهِنَّ نِصۡفُ مَا عَلَى ٱلۡمُحۡصَنَٰتِ مِنَ ٱلۡعَذَابِۚ ذَٰلِكَ لِمَنۡ خَشِيَ ٱلۡعَنَتَ مِنكُمۡۚ وَأَن تَصۡبِرُواْ خَيۡرٞ لَّكُمۡۗ وَٱللَّهُ غَفُورٞ رَّحِيمٞ
If one cannot afford to marry the free Muslim women, then (he may marry) the one you people own of your Muslim girls. Allah knows best about your faith. You are similar to each other.So, marry them with the permission of their masters, and give them their dues, as recognized, they being bound in marriage, not going for lust, nor having paramours. So, once they have been bound in marriage, then, if they commit a shameful act, they shall be liable to half of the punishment prescribed for the free women. That is for those of you who apprehend to indulge in sin. But that you be patient is better for you. Allah is Most-Forgiving, Very-Merciful.