From Jihad Watch:
"I've had numerous online discussions with Muslims about this issue. At least half of them do not deny but try to justify the practice.
Recently, Ali Eteraz started a thread with the hope of using the Islamic texts or principles to argue against sex slavery, but they hadn't gotten very far with it last time I checked. Again, there are many Muslims why try to use relativistic arguments to try and justify it or explain it away.
Here is some Islamic textual and other evidence that gives the Muslim male permission to rape the non-Muslim female slaves and captives that his "right hand possesses."
23:5. "And those who guard their chastity (i.e. private parts, from illegal sexual acts).
23:6. Except from their wives or (the captives and slaves) that their right hands possess, for then, they are free from blame;"
70:29. "And those who guard their chastity (i.e. private parts from illegal sexual acts) .
79:30. Except with their wives and the (women slaves and captives) whom their right hands possess, for (then) they are not to be blamed,"
4:24. "Also (forbidden are) women already married, except those (captives and slaves) whom your right hands possess. Thus has Allah ordained for you."
Ibn Kathir's tafsir of verse 4:24 states:
"Forbidding Women Already Married, Except for Female Slaves
(Also (forbidden are) women already married, except those whom your right hands possess.) The Ayah means, you are prohibited from marrying women who are already married,
(except those whom your right hands possess) except those whom you acquire through war, for you are allowed such women after making sure they are not pregnant. Imam Ahmad recorded that Abu Sa`id Al-Khudri said, "We captured some women from the area of Awtas who were already married, and we disliked having sexual relations with them because they already had husbands. So, we asked the Prophet about this matter, and this Ayah was revealed,
(Also (forbidden are) women already married, except those whom your right hands possess). Consequently, we had sexual relations with these women.'' [']"
And al-Jalalayn tafsir (4:24) states:
"And, forbidden to you are, wedded women, those with spouses, that you should marry them before they have left their spouses, be they Muslim free women or not; save what your right hands own, of captured [slave] girls, whom you may have sexual intercourse with, even if they should have spouses among the enemy camp, but only after they have been absolved of the possibility of pregnancy [after the completion of one menstrual cycle]; this is what God has prescribed for you (kit?ba is in the accusative because it is the verbal noun)."
Likewise, Ibn Abbas' tafsir (4:24) states:
"(And all married women (are forbidden unto you save those (captives) whom your right hands possess) of captives, even if they have husbands in the Abode of War, after ascertaining that they are not pregnant, by waiting for the lapse of one period of menstruation."
33:50. "O Prophet (Muhammad SAW)! Verily, We have made lawful to you your wives, to whom you have paid their Mahr (bridal money given by the husband to his wife at the time of marriage), and those (captives or slaves) whom your right hand possesses - whom Allah has given to you."
Ibn Kathir notes, from 33:50,
"which refers to the slave-girls taken captive by Mohammad "-(those (slaves) whom your right hand possesses whom Allah has given to you,) means, `the slave-girls whom you took from the war booty are also permitted to you.' He owned Safiyyah and Juwayriyah, then he manumitted them and married them, and he owned Rayhanah bint Sham`un An-Nadariyyah and Mariyah Al-Qibtiyyah, the mother of his son Ibrahim, upon him be peace; they were both among the prisoners, may Allah be pleased with them."
Sahih Bukhari, Volume 4, Book 52, Number 143:
Narrated Anas bin Malik: "when Allah enabled him [the Prophet] to conquer the Fort (of Khaibar), the beauty of Safiya bint Huyai bin Akhtab was described to him. Her husband had been killed while she was a bride. So Allah's Apostle selected her for himself and took her along with him till we reached a place called Sad-AsSahba,' where her menses were over and he took her for his wife. Haris (a kind of dish) was served on a small leather sheet. Then Allah's Apostle told me to call those who were around me. So, that was the marriage banquet of Allah's Apostle and Safiya." (Brackets added. Also see Sahih Muslim, Book 8, Number 3325).
Sahih Bukhari, Volume 5, Book 59, Number 523:
Narrated Anas bin Malik: "The Prophet stayed with Safiya bint Huyai for three days on the way of Khaibar where he consummated his marriage with her. Safiya was amongst those who were ordered to use a veil."
One jihadist's declaration (in Tabari IX:25): "By Allah, I did not come to Fight for nothing. I wanted a victory over Ta'if so that I might obtain a slave girl from them and make her pregnant." Sex with the "war booty" captives was considered by Mohammad to be a much-deserved reward for the jihadists:
Sahih Bukhari, Volume 5, Book 59, Number 637:
Narrated Buraida: "The Prophet sent 'Ali to Khalid to bring the Khumus (of the booty) and I hated Ali, and 'Ali had taken a bath (after a sexual act with a slave-girl from the Khumus). I said to Khalid, "Don't you see this (i.e. Ali)?" When we reached the Prophet I mentioned that to him. He said, "O Buraida! Do you hate Ali?" I said, "Yes." He said, "Do you hate him, for he deserves more than that from the Khumus.""
Sahih Muslim, Book 8, Number 3432 (also 3433, 3434): "Abu Sa'id al-Khudri (Allah be pleased with him) reported that at the Battle of Hanain Allah's Messenger (may peace be upon him) sent an army to Autas and encountered the enemy and fought with them. Having overcome them and taken them captives, the Companions of Allah's Messenger (may peace be upon him) seemed to refrain from having intercourse with captive women because of their husbands being polytheists. Then Allah, Most High, sent down regarding that: "And women already married, except those whom your right hands possess (iv. 24)" (i. e. they were lawful for them when their 'Idda period came to an end)."
Sunan Abu Dawud, Volume 2, Number 2150:
Abu Said al-Khudri said: "The apostle of Allah sent a military expedition to Awtas on the occasion of the battle of Hunain. They met their enemy and fought with them. They defeated them and took them captives. Some of the Companions of the apostle of Allah were reluctant to have intercourse with the female captives in the presence of their husbands who were unbelievers. So Allah, the Exalted, sent down the Quranic verse, "And all married women (are forbidden) unto your save those (captives) whom your right hand possesses". That is to say, they are lawful for them when they complete their waiting period."
(Sahih Muslim) "Chapter 29: IT IS PERMISSIBLE TO HAVE SEXUAL INTERCOURSE WITH A CAPTIVE WOMAN AFTER SHE IS PURIFIED (OF MENSES OR DELIVERY) IN CASE SHE HAS A HUSBAND, HER MARRIAGE IS ABROGATED AFTER SHE BECOMES CAPTIVE" [transl. M M Khan]
Sahih Muslim, Book 8, Number 3371 (3371-3388):
Abu Sirma said to Abu Sa'id al Khadri (Allah he pleased with him): O Abu Sa'id, did you hear Allah's Messenger (may peace be upon him) mentioning al-'azl? He said: Yes, and added: We went out with Allah's Messenger (may peace be upon him) on the expedition to the Bi'l-Mustaliq and took captive some excellent Arab women; and we desired them, for we were suffering from the absence of our wives, (but at the same time) we also desired ransom for them. So we decided to have sexual intercourse with them but by observing 'azl (Withdrawing the male sexual organ before emission of semen to avoid-conception). But we said: We are doing an act whereas Allah's Messenger is amongst us; why not ask him? So we asked Allah's Messenger (may peace be upon him), and he said: It does not matter if you do not do it, for every soul that is to be born up to the Day of Resurrection will be born."
Sahih Bukhari, Volume 3, Book 34, Number 432:
"Narrated Abu Said Al-Khudri: that while he was sitting with Allah's Apostle he said, "O Allah's Apostle! We get female captives as our share of booty, and we are interested in their prices, what is your opinion about coitus interruptus?" The Prophet said, "Do you really do that? It is better for you not to do it. No soul that which Allah has destined to exist, but will surely come into existence."
Malik's Muwatta, Book 29, Number 29.32.95:
Yahya related to me from Malik from Rabia ibn Abi Abd ar-Rahman from Muhammad ibn Yahya ibn Habban that Ibn Muhayriz said, "I went into the mosque and saw Abu Said al-Khudri and so I sat by him and asked him about coitus interruptus. Abu Said al-Khudri said, 'We went out with the Messenger of Allah, may Allah bless him and grant him peace, on the expedition to the Banu al-Mustaliq. We took some Arabs prisoner, and we desired the women as celibacy was hard for us. We wanted the ransom, so we wanted to practise coitus interruptus. We said, 'Shall we practise coitus interruptus while the Messenger of Allah, may Allah bless him and grant him peace, is among us before we ask him?' We asked him about that and he said, 'You don't have to not do it. There is no self which is to come into existence up to the Day of Rising but that it will come into existence.' "
Sunan Abu Dawud, Book 11, Number 2153:
Narrated Ruwayfi' ibn Thabit al-Ansari: Should I tell you what I heard the Apostle of Allah (peace_be_upon_him) say on the day of Hunayn: It is not lawful for a man who believes in Allah and the last day to water what another has sown with his water (meaning intercourse with women who are pregnant); it is not lawful for a man who believes in Allah and the Last Day to have intercourse with a captive woman till she is free from a menstrual course; and it is not lawful for a man who believes in Allah and the Last Day to sell spoil till it is divided.
Malik's Muwatta, Book 30, Number 30.2.13:
Yahya related to me from Malik that Abdullah ibn Dinar said, "A man came to Abdullah ibn Umar when I was with him at the place where judgments were given and asked him about the suckling of an older person. Abdullah ibn Umar replied, 'A man came to Umar ibn al-Khattab and said, 'I have a slave-girl and I used to have intercourse with her. My wife went to her and suckled her. When I went to the girl, my wife told me to watch out, because she had suckled her!' Umar told him to beat his wife and to go to his slave-girl because kinship by suckling was only by the suckling of the young.' "
Malik's Muwatta, Book 29, Number 29.32.100:
Yahya related to me from Malik from Humayd ibn Qays al-Makki that a man called Dhafif said that Ibn Abbas was asked about coitus interruptus. He called a slave-girl of his and said, "Tell them." She was embarrassed. He said, "It is alright, and I do it myself." Malik said, "A man does not practise coitus interruptus with a free woman unless she gives her permission. There is no harm in practising coitus interruptus with a slave-girl without her permission. Someone who has someone else's slave-girl as a wife, does not practise coitus interruptus with her unless her people give him permission."
Malik's Muwatta, Book 2, Number 2.23.90:
Yahya related to me from Malik from Nafi that the slave girls of Abdullah ibn Umar used to wash his feet and bring him a mat of palm leaves while they were menstruating.
Malik was asked whether a man who had women and slave girls could have intercourse with all of them before he did ghusl. He said, "There is no harm in a man having intercourse with two of his slave girls before he does ghusl. It is disapproved of, however, to go to a freewoman on another's day. There is no harm in making love first to one slave girl and then to another when one is junub." 
Malik was asked about a man who was junub and water was put down for him to do ghusl with. Then he forgot and put his finger into it to find out whether it was hot or cold. Malik said, "If no filth has soiled his fingers, I do not consider that that makes the water impure."
 ghusl: full ablution (ritual washing to remove some "impurity").
 junub: in a state of impurity following sexual activity.
In his in-depth article on Sex and Sexuality in Islam, (Islam critic) Abul Kasem writes:
"...a Muslim man (whether married or not), while living in an infidel country, can...(...have sex) with any number of infidel women without even having the slightest fear of committing Zina (fornication) or adultery"This is what I found when I consulted the living and breathing Islam, that is, Sha'ria [the material below is quoted from the Hedaya; note "Mussulman" means Muslim]:
"No punishment for Zina or adultery committed in a foreign country (ref. 11, p185)
"Punishment is not incurred by committing whoredom in foreign country. If a Mussulman be guilty of whoredom in a foreign country, or in the territory of the rebels, and afterwards return into a Mussulman state, punishment is not to be meted out on him, on the plea that a man, in embracing the Mussulman faith, binds himself to all the obligations thereof, wherever he may be. The arguments of our doctors on this occasion are twofold; --FIRST, the Prophet has said, "punishment is not to be inflicted in a foreign land"; SECONDLY, the design of the institution of punishment is that it may operate as a prevention or warning; now the Mussulman magistrate has no authority in a foreign country, wherefore if punishment were instituted upon a person committing whoredom in a foreign country, yet the institution would be useless; for the use of the institution is that punishment may be executed; and as the magistrate has no authority in a foreign country, the execution is impossible; whence it appears that the commission of whoredom in a foreign country does not occasion punishment there; and if this person should afterwards come from the foreign territory into a Mussulman state, punishment cannot be executed upon him; because as his whoredom did not occasion punishment at the time of its being committed, it will not afterwards occasion."(11) [Brackets added]."
Posted by: Khaybar Oasis [TypeKey Profile Page] at September 23, 2007 6:39 AM http://www.jihadwatch.org/archives/018219.php#c453768