An-Noor 24:33

Let those who cannot afford marriage keep themselves chaste until Allah suffices them from His bounty. If any of your slaves wishes to enter the contract of emancipation[24], make this contract with them, if you find goodness in them, and give them some of the wealth that Allah has given you. Do not compel your slave girls into prostitution – if they wish to keep chaste – seeking the worldly gains of this life[25]. But if anyone compels them, then Allah, after such a compulsion, is All-Forgiving, Most Merciful.

[24] i.e., those slaves who want to purchase their freedom for a specific price.
[25] As happened with Abdullah ibn ’Ubayy, the head of the hypocrites, who forced his two slave-girls to commit illegal sexual acts for worldly gains, while they wished to keep chaste.

But let them who find not [the means for] marriage abstain [from sexual relations] until Allāh enriches them from His bounty. And those who seek a contract [for eventual emancipation] from among whom your right hands possess[994] - then make a contract with them if you know there is within them goodness and give them from the wealth of Allāh which He has given you. And do not compel your slave girls to prostitution, if they desire chastity, to seek [thereby] the temporary interests of worldly life. And if someone should compel them, then indeed, Allāh is [to them], after their compulsion, Forgiving and Merciful.

[994] i.e., those slaves who desire to purchase their freedom from their owners for a price agreed upon by both.

33. And let those who find not the financial means for marriage keep themselves chaste, until Allâh enriches them of His Bounty. And such of your slaves as seek a writing (of emancipation), give them such writing, if you find that there is good and honesty in them. And give them something (yourselves) out of the wealth of Allâh which He has bestowed upon you. And force not your maids to prostitution, if they desire chastity, in order that you may make a gain in the (perishable) goods of this worldly life. But if anyone compels them (to prostitution), then after such compulsion, Allâh is Oft-Forgiving, Most Merciful (to those women, i.e. He will forgive them because they have been forced to do this evil act unwillingly).

And let those who cannot find a match keep chaste till Allah give them independence by His grace. And such of your slaves as seek a writing (of emancipation), write it for them if ye are aware of aught of good in them, and bestow upon them of the wealth of Allah which He hath bestowed upon you. Force not your slave-girls to whoredom that ye may seek enjoyment of the life of the world, if they would preserve their chastity. And if one force them, then (unto them), after their compulsion, lo! Allah will be Forgiving, Merciful.