سورة Al-Baqarah ( The Cow ) - الآية 229

Divorce is (revokable) two times (after pronouncement), after which (there are two ways open for husbands), either (to) keep (the wives) honourably, or part with them in a decent way. You are not allowed to take away the least of what you have given your wives, unless both of you fear that you would not be able to keep within the limits set by God. If you fear you cannot maintain the bounds fixed by God, there will be no blame on either if the woman redeems herself. Do not exceed the limits of God, for those who exceed the bounds set by God are transgressors.