The Book of Marriage (Kitab Al-Nikah)
Muslim :: Book 8 : Hadith 3433
Abu Sa'id al-Khudri (Allah be pleased with him) reported that Allah's Apostle (may peace be upon him) sent a small army. The rest of the hadith is the same except this that he said: Except what your right hands possessout of them are lawful for you; and he did not mention" when their 'idda period comes to an end". 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)