The Cow - 2:229
Divorce is twice. Divorced women should either be kept in kindness or left in kindness. It is not lawful for you to take back what you have given them, except if the spouses fear that they may not observe the limits of Allah. If you fear that you may not observe the limits of Allah, then they will not be guilty of sin for what she has willingly given back. These are the limits of Allah; do not transgress them. Whoever transgresses the limits of Allah, they are the wrongdoers.
Whoever transgresses the laws of Allah:
The Cow/2:229
Divorce is twice. Divorced women should either be kept in kindness or left in kindness. It is not lawful for you to take back what you have given them, except if the spouses fear that they may not observe the limits of Allah. If you fear that you may not observe the limits of Allah, then they will not be guilty of sin for what she has willingly given back. These are the limits of Allah; do not transgress them. Whoever transgresses the limits of Allah, they are the wrongdoers.
The Women/4:14
Whoever disobeys Allah and His messenger and transgresses His laws, He will admit him into a Fire in which he will abide forever. For him is a humiliating torment.
Divorce/65:1
O Prophet, when you divorce women, observe the term of divorce and calculate it well. Listen to Allah, your Lord. And do not drive them out of their homes, nor should they drive them out (do not force them to do so by ill-treatment). Except if they commit proven adultery. This is the law of Allah. Whoever transgresses Allah´s law has wronged himself. You do not know, but perhaps Allah will bring about something (positive) after that.