What is the ruling regarding a man's statement: "Divorce be upon me if I enter this place again," if he then enters it?

If a man swears by divorce that he will not enter a resting place and then enters it, his wife is divorced from him according to the majority of scholars. He may take her back if he has not completed his three divorces and before the expiration of her waiting period (iddah). Some scholars are of the view that if his intention was to threaten and not to effect a divorce, then no divorce occurs, but he must offer an expiation for a broken oath (kaffarat yamin). It should be noted that the permissible oath is by Allah Almighty, whereas swearing by divorce is among the oaths of the dissolute and can lead to dire consequences.