The Book of Suckling
17/9. Chapter:
It is permissible to have intercourse with a female captive after it is established that she is not pregnant, and if she has a husband, then her marriage is annulled when she is captured
Sahih Muslim
وَحَدَّثَنِيهِ يَحْيَى بْنُ حَبِيبٍ الْحَارِثِيُّ، حَدَّثَنَا خَالِدُ بْنُ الْحَارِثِ، حَدَّثَنَا شُعْبَةُ، عَنْ قَتَادَةَ، عَنْ أَبِي الْخَلِيلِ، عَنْ أَبِي سَعِيدٍ، قَالَ أَصَابُوا سَبْيًا يَوْمَ أَوْطَاسٍ لَهُنَّ أَزْوَاجٌ فَتَخَوَّفُوا فَأُنْزِلَتْ هَذِهِ الآيَةُ { وَالْمُحْصَنَاتُ مِنَ النِّسَاءِ إِلاَّ مَا مَلَكَتْ أَيْمَانُكُمْ} .
This hadith has been reported on the authority of AbuSa'id (al-Khudri) (Allah be pleased with him) through another chain of transmitters and the words are: They took captives (women) on the day of Autas who had their husbands. They were afraid (to have sexual intercourse with them) when this verse was revealed:" And women already married except those whom you right hands posses" (iv. 24)
Reference : Sahih Muslim 1456dIn-book reference : Book 17, Hadith 43USC-MSA web (English) reference : Book 8, Hadith 3433