Written by Robert Spencer

There are several Qur’an verses that Muslims who believe in sex slavery — like those of the Islamic State — point to in order to justify kidnapping young girls and pressing them into sexual slavery:

If you fear that you will not act justly towards the orphans, marry such women as seem good to you, two, three, four; but if you fear you will not be equitable, then only one, or what your right hands own; so it is likelier you will not be partial. (Qur’an 4:3)

And:
And also prohibited to you are all married women except those your right hands possess. (Qur’an 4:24)

And:
O Prophet! We have made lawful to you your wives to whom you have paid their dowries; and those whom your right hand possesses out of the prisoners of war whom Allah has assigned to you.

See also 70:29-30. The mainstream Muslim commentary Tafsir al-Jalalayn explains that 4:3 tells Muslims to “marry only one, or, restrict yourself to what your right hands own, of slavegirls, since these do not have the same rights as wives.” The twentieth-century Qur’an commentator Maulana Bulandshahri explains the wisdom of this practice, and longs for the good old days:

During Jihad (religion war), many men and women become war captives. The Amirul Mu’minin [leader of the believers, or caliph -- an office now vacant] has the choice of distributing them amongst the Mujahidin [warriors of jihad], in which event they will become the property of these Mujahidin. This enslavement is the penalty for disbelief (kufr).

He goes on to explain that this is not ancient history:
None of the injunctions pertaining to slavery have been abrogated in the Shari’ah. The reason that the Muslims of today do not have slaves is because they do not engage in Jihad (religion war). Their wars are fought by the instruction of the disbelievers (kuffar) and are halted by the same felons. The Muslim [sic] have been shackled by such treaties of the disbelievers (kuffar) whereby they cannot enslave anyone in the event of a war. Muslims have been denied a great boon whereby every home could have had a slave. May Allah grant the Muslims the ability to escape the tentacles of the enemy, remain steadfast upon the Din (religion) and engage in Jihad (religion war) according to the injunctions of Shari’ah. Amen!
.
This is by no means an eccentric or unorthodox view in Islam. The Egyptian Sheikh Abu-Ishaq al-Huwayni declared in May 2011 that “we are in the era of jihad,” and that as they waged jihad warfare against infidels, Muslims would take slaves. He clarified what he meant in a subsequent interview:

…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” [Qur’an 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.

Right around the... http://www.jihadwatch.org/2014/08/islamic-state-enslaves-400-yazidi-wome...