What is the ruling on someone who swore an oath of divorce (if he takes his wife to the sea again, she will be divorced) while in a state of extreme anger due to a mental illness for which he takes anti-anxiety and anti-stress medications, and is it permissible for him to take them to the sea in the future for swimming or to sit on the corniche?

If a person's anger reaches a level where they are unaware of what they are uttering, then their divorce (talaq (definition)) is not valid. However, if they are aware of what they are saying and in control of it, then the conditional divorce is valid. In this case, their intention is to be considered: it takes effect if the sworn-upon condition (swimming) occurs, but it does not take effect if they merely go for a picnic, provided that the woman adheres to the Islamic etiquette in such places.