"Also (forbidden are) women already married, except those (slaves) whom your right hands possess," meaning, this is permissible for you once they have completed their 'Iddah.  

أَنَّ نَبِيَّ اللَّهِ ﷺ بَعَثَ جَيْشًا إِلَى أَوْطَاسٍ فَلَقُوا عَدُوًّا فَقَاتَلُوهُمْ وَظَهَرُوا عَلَيْهِمْ فَأَصَابُوا لَهُمْ سَبَايَا لَهُنَّ أَزْوَاجٌ فِي الْمُشْرِكِينَ فَكَانَ الْمُسْلِمُونَ تَحَرَّجُوا مِنْ غِشْيَانِهِنَّ فَأَنْزَلَ اللَّهُ ﷻ { وَالْمُحْصَنَاتُ مِنَ النِّسَاءِ إِلاَّ مَا مَلَكَتْ أَيْمَانُكُمْ } أَىْ هَذَا لَكُمْ حَلاَلٌ إِذَا انْقَضَتْ عِدَّتُهُنَّ  

Abu Sa’id Al Khudri said “The Apostle of Allaah ﷺ sent a military expedition to Awtas on the occasion of the battle of Hunain. They met their enemy and fought with them. They defeated them and took them captives. Some of the Companions of Apostle of Allaah ﷺ were reluctant to have relations with the female captives because of their pagan husbands. So, Allaah the exalted sent down the Qur’anic verse “And all married women (are forbidden) unto you save those (captives) whom your right hand posses.” This is to say that they are lawful for them when they complete their waiting period.  

أَنَّ رَسُولَ اللَّهِ ﷺ بَعَثَ يَوْمَ حُنَيْنٍ بَعْثًا إِلَى أَوْطَاسٍ فَلَقُوا عَدُوَّهُمْ فَقَاتَلُوهُمْ فَظَهَرُوا عَلَيْهِمْ وَأَصَابُوا لَهُمْ سَبَايَا فَكَأَنَّ أُنَاسًا مِنْ أَصْحَابِ رَسُولِ اللَّهِ ﷺ تَحَرَّجُوا مِنْ غِشْيَانِهِنَّ مِنْ أَجْلِ أَزْوَاجِهِنَّ مِنَ الْمُشْرِكِينَ فَأَنْزَلَ اللَّهُ تَعَالَى فِي ذَلِكَ { وَالْمُحْصَنَاتُ مِنَ النِّسَاءِ إِلاَّ مَا مَلَكَتْ أَيْمَانُكُمْ } أَىْ فَهُنَّ لَهُمْ حَلاَلٌ إِذَا انْقَضَتْ عِدَّتُهُنَّ  

"Also (forbidden are) women already married, except those (slaves) whom your right hands possess," meaning, this is permissible for you once they have completed their 'Iddah. (Using translation from Nasāʾī 3333)  

أَنَّ نَبِيَّ اللهِ ﷺ بَعَثَ جَيْشًا إِلَى أَوْطَاسٍ فَلَقُوا عَدُوًّا فَقَاتَلُوهُمْ وَظَهَرُوا عَلَيْهِمْ فَأَصَابُوا لَهُمْ سَبَايَا لَهُنَّ أَزْوَاجٌ فِي الْمُشْرِكِينَ فَكَانَ الْمُسْلِمُونَ يَتَحَرَّجُونَ مِنْ غِشْيَانِهِنَّ فَأَنْزَلَ اللهُ تَعَالَى {وَالْمُحْصَنَاتُ مِنَ النِّسَاءِ إِلَّا مَا مَلَكَتْ أَيْمَانُكُمْ} [النساء 24] أَيْ هَذَا لَكُمْ حَلَالٌ إِذَا انْقَضَتْ عِدَّتُهُنَّ  

Abu Sa’id Al Khudri said “The Apostle of Allaah ﷺ sent a military expedition to Awtas on the occasion of the battle of Hunain. They met their enemy and fought with them. They defeated them and took them captives. Some of the Companions of Apostle of Allaah ﷺ were reluctant to have relations with the female captives because of their pagan husbands. So, Allaah the exalted sent down the Qur’anic verse “And all married women (are forbidden) unto you save those (captives) whom your right hand posses.” This is to say that they are lawful for them when they complete their waiting period. (Using translation from Abū Dāʾūd 2155)   

أَنَّ رَسُولَ اللهِ ﷺ بَعَثَ يَوْمَ حُنَيْنٍ جَيْشًا إِلَى أَوْطَاسٍ فَلَقَوْا عَدُوًّا فَقَاتَلُوهُمْ فَظَهَرُوا عَلَيْهِمْ وَأَصَابُوا لَهُمْ سَبَايَا فَكَأَنَّ نَاسًا مِنْ أَصْحَابِ رَسُولِ اللهِ ﷺ تَحَرَّجُوا مِنْ غِشْيَانِهِنَّ مِنْ أَجْلِ أَزْوَاجِهِنَّ مِنَ الْمُشْرِكِينَ فَأَنْزَلَ اللهُ ﷻ فِي ذَلِكَ {وَالْمُحْصَنَاتُ مِنَ النِّسَاءِ إِلَّا مَا مَلَكَتْ أَيْمَانُكُمْ} [النساء 24] أَيْ فَهُنَّ لَكُمْ حَلَالٌ إِذَا انْقَضَتْ عِدَّتُهُنَّ