Slavery is taken for granted in the Qur’an, even as it enjoins the freeing of slaves under certain circumstances, such as the breaking of an oath: “Allah will not call you to account for what is futile in your oaths, but He will call you to account for your deliberate oaths: for expiation, feed ten indigent persons, on a scale of the average for the food of your families; or clothe them; or give a slave his freedom” (5:89). Slaves are to be freed under certain circumstances, but there is no hint that all slaves should be freed.
Muhammad, the supreme example of conduct for Muslims (cf. Qur’an 33:21) bought slaves: “Jabir (Allah be pleased with him) reported: There came a slave and pledged allegiance to Allah’s Apostle (may peace be upon him) on migration; he (the Holy Prophet) did not know that he was a slave. Then there came his master and demanded him back, whereupon Allah’s Apostle (may peace be upon him) said: Sell him to me. And he bought him for two black slaves, and he did not afterwards take allegiance from anyone until he had asked him whether he was a slave (or a free man).” (Muslim 3901)
Muhammad took female Infidel captives as slaves: “Narrated Anas: The Prophet offered the Fajr Prayer near Khaibar when it was still dark and then said, ‘Allahu-Akbar! Khaibar is destroyed, for whenever we approach a (hostile) nation (to fight), then evil will be the morning for those who have been warned.’ Then the inhabitants of Khaibar came out running on the roads. The Prophet had their warriors killed, their offspring and woman taken as captives. Safiya was amongst the captives. She first came in the share of Dahya Alkali but later on she belonged to the Prophet. The Prophet made her manumission as her ‘Mahr.’” (Bukhari 5.59.512) Mahr is bride price: Muhammad freed her and married her. But he didn’t do this to all his slaves:
Muhammad owned slaves: “Narrated Anas bin Malik: Allah’s Apostle was on a journey and he had a black slave called Anjasha, and he was driving the camels (very fast, and there were women riding on those camels). Allah’s Apostle said, ‘Waihaka (May Allah be merciful to you), O Anjasha! Drive slowly (the camels) with the glass vessels (women)!’” (Bukhari 8.73.182) There is no mention of Muhammad’s freeing Anjasha.
Also, the seizure of Infidel girls and their use as sex slaves is sanctioned in the Qur’an. According to Islamic law, Muslim men can take “captives of the right hand” (Qur’an 4:3, 4:24, 33:50). The Qur’an says: “O Prophet! Lo! We have made lawful to you your wives to whom you have paid their dowries, and those whom your right hand possesses of those whom Allah has given you as spoils of war” (33:50). 4:3 and 4:24 extend this privilege to Muslim men in general. The Qur’an says that a man may have sex with his wives and with these slave girls: “The believers must win through, those who humble themselves in their prayers; who avoid vain talk; who are active in deeds of charity; who abstain from sex, except with those joined to them in the marriage bond, or whom their right hands possess, for they are free from blame.” (Qur’an 23:1-6)
The rape of captive women is also sanctioned in Islamic tradition:
Abu Sirma said to Abu Sa’id al Khadri (Allah he pleased with him): 0 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 Muslim 3371)
It is also in Islamic law: “When a child or a woman is taken captive, they become slaves by the fact of capture, and the woman’s previous marriage is immediately annulled.” (Umdat al-Salik O9.13)
The Egyptian Sheikh Abu-Ishaq al-Huwayni declared in May 2011 that “we are in the era of jihad,” and that meant Muslims would take slaves. In a subsequent interview he elaborated:
Jihad is only between Muslims and infidels. Spoils, slaves, and prisoners are only to be taken in war between Muslims and infidels. Muslims in the past conquered, invaded, and took over countries. This is agreed to by all scholars—there is no disagreement on this from any of them, from the smallest to the largest, on the issue of taking spoils and prisoners. The prisoners and spoils are distributed among the fighters, which includes men, women, children, wealth, and so on.
When a slave market is erected, which is a market in which are sold slaves and sex-slaves, which are called in the Qur’an by the name milk al-yamin, “that which your right hands possess” [Koran 4:24]. This is a verse from the Qur’an which is still in force, and has not been abrogated. The milk al-yamin are the sex-slaves. You go to the market, look at the sex-slave, and buy her. She becomes like your wife, (but) she doesn’t need a (marriage) contract or a divorce like a free woman, nor does she need a wali. All scholars agree on this point—there is no disagreement from any of them. […] When I want a sex slave, I just go to the market and choose the woman I like and purchase her.
Around the same time, on May 25, 2011, a female Kuwaiti politician, Salwa al-Mutairi, also spoke out in favor of the Islamic practice of sexual slavery of non-Muslim women, emphasizing that the practice accorded with Islamic law and the parameters of Islamic morality.
A merchant told me that he would like to have a sex slave. He said he would not be negligent with her, and that Islam permitted this sort of thing. He was speaking the truth. I brought up [this man’s] situation to the muftis in Mecca. I told them that I had a question, since they were men who specialized in what was halal, and what was good, and who loved women. I said, “What is the law of sex slaves?”
The mufti said, “With the law of sex slaves, there must be a Muslim nation at war with a Christian nation, or a nation which is not of the religion, not of the religion of Islam. And there must be prisoners of war.”
“Is this forbidden by Islam?” I asked.
“Absolutely not. Sex slaves are not forbidden by Islam. On the contrary, sex slaves are under a different law than the free woman. The free woman must be completely covered except for her face and hands. But the sex slave can be naked from the waist up. She differs a lot from the free woman. While the free woman requires a marriage contract, the sex slave does not—she only needs to be purchased by her husband, and that’s it. Therefore the sex slave is different than the free woman.”
Iraqi Ayatollah Al-Haeri said in April 7, 2016 that a man could offer slave girls to a friend for sex.
(text extracted as a portion of an article by Robert Spencer, from Jihad Watch)