Narrated Abu Sa'eed Al-Khudri:
"We captured some women on the Day of Awtas and they had husbands among their people. That was mentioned to the Messenger of Allah (ﷺ) so Allah revealed: '...And women already married, except those whom your right hands possess... (4:24)'" (IT)
English reference (IT): Vol. 5, Book 44, Hadith 3017 (IT)
Arabic reference (IT): Book 47, Hadith 3290 (IT)