What the Quran says about Polygamy

2:187: It is made lawful for you to go in unto your wives on the night of the fast.
4:3: Marry of the women, who seem good to you, two or three or four.
4:20: And if ye wish to exchange one wife for another....
4:24: All married women (are forbidden unto you) save those (captives) whom your right hands possess.
4:129: Ye will not be able to deal equally between (your) wives, however much ye wish (to do so).
23:1-6: Successful indeed are [those] who who guard their modesty - Save from their wives or the (slaves) that their right hands possess.