What is the ruling on a husband who, in a moment of intense anger, said to his wife, "By God Almighty, I will divorce you this very day," after she provoked him by saying, "If you are a man, divorce me; and if you have any dignity, divorce me"?

Divorce does not take effect merely by promising it, even if confirmed by an oath. So, you are not bound by a divorce, but you are bound by an expiation for breaking your oath, which is feeding ten poor persons or clothing them, or fasting for three days if you cannot find that.