Sura 33:49 – 52 — The Confederate Tribes
[33.49] Believers, if you marry believing women and divorce them before the marriage is consummated, you are not required to observe a waiting period. Provide well for them and release them honourably.
[33.50] Prophet, We have made lawful for you the wives to whom you have granted dowries and the slave-girls whom God has given you as booty; the daughters of your paternal and maternal uncles and of your paternal and maternal aunts who fled with you; and any believing woman who gives herself to the Prophet and whom the Prophet wishes to take in marriage. This privilege is yours alone, being granted to no other believer.
We well know the duties We have imposed on the faithful concerning their wives and slave-girls. [We grant you this privilege] so that none may blame you. God is ever forgiving and merciful.
[33.51] You may put off any of your wives you please and take to your bed any of them you please. Nor is it unlawful for you to receive any of those whom you have temporarily set aside. That is more proper, so that they may be contented and not vexed, and may all be pleased with what you give them.
God knows what is in your hearts. Surely God is all-knowing and gracious.
[33.52] It shall be unlawful for you to take more wives or to change your present wives for other women, though their beauty please you, unless they are slave-girls whom you own. God takes cognizance of all things.
From N. J. Dawood, The Koran (London: Penguin Books, 2003), page 297 – 298.