Spoils of War.  Muslims inherit booty.  In this case, it was the Jews' land:

·         Allah brought those of the people of the book who had backed up the confederates, down from their fortresses and cast terror into their hearts; so that some of them you slew and some you took captive. He made you inheritors of their land and their houses and their wealth, and of a land on which you have not yet set foot. (33:26,27)  

Non Muslims living in Muslim lands are called Dhimmis and subjected to a tax called Jizya:  

·         Fight those who do not believe in Allah, nor in the latter day, nor do they prohibit what Allah and His Messenger have prohibited, nor follow the religion of truth, out of those who have been given the Book, until they pay the jizya tax in acknowledgment of superiority and they are in a state of subjection. (9:29)

Muslims state Mohammad decreed the freeing of the slaves. The verse in which this is mentioned states that freeing of a slave is a PENALTY for one who commits manslaughter (of a Muslim only.)

The slave is property. Freeing a slave is like paying a FINE, but is only to be done if it can be AFFORDED:

·         Never should a believer kill a believer, unless it happens by mistake. If one kills a believer, it is ordained that he should free a believing slave, and pay compensation to the deceased's family, unless they remit it freely. If the deceased belonged to a people at war with you, and he was a believer, the freeing of a believing slave is sufficient. If he belonged to a people with whom ye have treaty of mutual alliance, compensation should be paid to his family, and a believing slave be freed. For those who find this beyond their means,  fast for two months running: by way of repentance to Allah: for Allah hath all knowledge and all wisdom. (4:92)

Slaves have no power and are unequal:

·         Allah sets forth the Parable of two men: one a slave under the dominion of another; He has no power of any sort; and the other a man on whom We have bestowed goodly favours from Ourselves, and he spends thereof (freely), privately and publicly: are the two equal?  praise be to Allah. But most of them understand not. (16:75)

Slaves should not be shared:

·         Allah puts forth a Parable a man belonging to many partners at variance with each other, and a man belonging entirely to one master: are those two equal in comparison? Praise be to Allah! but most of them have no knowledge. (33:29)

Freeing slaves earns less reward than giving them to others:


The freed slave of Ibn 'Abbas, that Maimuna bint Al-Harith told him that she manumitted a slave-girl without taking the permission of the Prophet. On the day when it was her turn to be with the Prophet, she said, "Do you know, O Allah's Apostle, that I have manumitted my slave-girl?" He said, "Have you really?" She replied in the affirmative. He said, "You would have got more reward if you had given her (i.e. the slave-girl) to one of your maternal uncles." Bukhar1 V3 B47 N765

Muslims say their form of slavery is kind to slaves. But sex with slaves is OK:

·          Successful indeed are the believers who are humble in their prayers, and who avoid vain talk, and who are active in deeds of charity, who abstain from sex, save from their wives or the (slaves) that their right hands possess, for then they are not blameworthy (23:1-6)

So nice it had to be repeated:

•  And those who guard their chastity, Except with their wives and the captives whom their right hands possess,- for then they are not to be blamed (70:29-30)

Raping captive women is necessary for soldiers when they are away from their wives. Mohammad says there is no harm in raping them, no harm in ransoming them, and since this is all from Allah, there is no need to try to prevent pregnancy:

• We went out with Allah's Messenger 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). 

Slave girls should be virgins too, but their punishment for unbecoming conduct is half that of Muslim women. (Being slaves, there is good chance that they were raped or used for sex already:)

• Wed them (slave girls) with the leave of their owners and give them theirdowers, according to what is reasonable. They should be chaste, not lustful, nor taking paramours, when they are taken in wedlock. If they are guilty of unbecoming conduct, their punishment is half that for free women. (4:25) )

Prostitution is not unheard of for your slave girls: 

• Do not compel your slave girls to prostitution, when they desire to keep chaste, in order to seek the frail good of this world's life; and whoever compels them, then surely after their compulsion Allah is Forgiving, Merciful. (24:33)

There is a definite caste system shown in the Koran:

• Not equal are those believers who sit at home and receive no hurt, and those who strive and fight in the cause of allah with their goods and their persons. Allah hath granted a grade higher to those who strive and fight with their goods and persons than to those who sit at home. Unto all in faith hath allah promised good: But those who strive and fight hath he distinguished above those who sit at home (4:95)

• Observe, how we have exalted some over others in respect of the provisions of this life; and surely, the life of the hereafter will be more varied in degrees of ranks and degrees of excellence. (17:21)

• Not equal among you are those who spent freely and fought, before the victory, with those who did so later. Those are higher in rank than those who spent freely and fought afterwards. (57:10)

• O mankind, we have created you from male and female, and we have divided you into tribes and sub-tribes so that you may know each other (49:13)

·          Not equal are the blind and those who clearly see: Nor are equal those who believe and work deeds of righteousness, and those who do evil. (40:58)

• They will recline with ease on thrones of dignity arranged in ranks, and we shall join them to companions, with beautiful big an lustrous eyes. (52:20)