Musnad Abu Ya'la al-Mawsili 42:258

Zuhayr narrated to us, Hushaym ibn Bashir narrated to us, Uthman al-Batti narrated to us, from Abu al-Khalil, from Abu Sa’id al-Khudri, who said: We captured female captives on the day of Awtas, and they had husbands among their people. They mentioned that to the Prophet, may Allah bless him and grant him peace. He said: Then was revealed: "And [also prohibited are] women already married, except those your right hands possess" (An-Nisa: 24).