(17) The Book of Suckling
كتاب الرضاع
(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
(9) باب جَوَازِ وَطْءِ الْمَسْبِيَّةِ بَعْدَ الاِسْتِبْرَاءِ وَإِنْ كَانَ لَهَا زَوْجٌ انْفَسَخَ نِكَاحُهَا بِالسَّبْي
Sahih Muslim 1456 c 
Likewise, the above hadith has been narrated through another chain.
وَحَدَّثَنِيهِ يَحْيَى بْنُ حَبِيبٍ الْحَارِثِيُّ، حَدَّثَنَا خَالِدٌ، - يَعْنِي ابْنَ الْحَارِثِ - حَدَّثَنَا شُعْبَةُ، عَنْ قَتَادَةَ، بِهَذَا الإِسْنَادِ نَحْوَهُ ‏.‏
Reference : Sahih Muslim 1456c
In-book reference : Book 17, Hadith 44
USC-MSA web (English) reference : Book 8, Hadith 3433
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