What is the ruling on breaking an oath of triple divorce, made in a moment of intense anger, regarding not eating or drinking from one's parents' house, and what is the expiation required for that?

As long as the husband did not eat or drink, he did not break his oath of divorce, and no divorce occurred. There is a disagreement among scholars regarding the "oath of divorce": some believe that divorce is binding upon breaking the oath, while others hold that only an expiation for an oath (kaffarat yamin) is required, which is what many Sharia courts adopt. Anger does not prevent the oath from being binding unless it overwhelms the mind and causes loss of awareness. The husband must be careful not to utter an oath of divorce.