Verses 127-131 of Chapter 4:

They ask your verdict concerning women. Say. `'Allah gives His verdict concerning them, and along with it reminds you of those Commandments which have already been told you in this Book, that is, the Commandments concerning those orphan girls whom you do not give their lawful rights and whom you do not wish to marry (or. whom you yourselves desire to marry for greed). He also reminds you of the Commandments concerning those children who are weak and helpless. Allah enjoins you to deal justly with orphans: Allah has full knowledge of whatever good you do. When a woman fears ill-treatment or aversion from her husband, there is no harm if the two make peace between themselves(by means of a compromise); after all peace is the best thing. Human souls are prone to narrow-mindedness, but if you show generosity and fear Allah in your dealings, you may rest assured that Allah will be fully aware of all that you do it is not within your power to be perfectly equitable in your treatment with all your wives, even if you wish to be so; therefore, (in order to satisfy the dictates of Divine Law) do not lean wholly towards one wife so as to leave the other in a state of suspense. If you behave righteously and fear Allah, you will find Allah Forgiving and Compassionate. But if the spouses do separate, Allah will make each one of them independent of the other by His vast powers, for His resources are limitless and He is All-Wise and All-Knowing. And everything in the heavens and the earth belongs to Him. We enjoined those whom We gave the Book before you and now enjoin you also, to fear Allah in all your dealings. But if you reject this, (you will do so at your own peril, for) Allah is the owner of everything in the heavens and the earth: He does not stand in need of anyone and is worthy of all praise.