What is the ruling on one who said to his wife, "By divorce, you are forbidden to marry, and it is forbidden for you to be a wife, and you shall not be a wife to anyone," with the intention of threatening or out of anger, and did not intend divorce?

Swearing by divorce is not permissible and endangers the marital bond. Breaking such an oath is considered a divorce by the majority of scholars, even if the intention was merely to threaten. If a man swears by divorce that his wife does not deserve marriage due to a flaw in her, and he truly believes that and no evidence to the contrary emerges, then there is no issue regarding him not breaking his oath. However, if evidence contrary to his belief emerges, some scholars say that divorce occurs, while others say it does not. The questioner's intention and purpose are considered in these matters, so it is necessary to consult scholars directly.