Is it permissible for the wife to buy something her husband swore he wouldn't buy, such as if he said: "By divorce, I will not buy anything from the internet"?

The husband does not break his oath if his wife makes a purchase on his behalf, unless he intended that neither he nor anyone on his behalf should buy. However, he does break his oath if his wife makes a purchase on his behalf, according to the majority of jurists. If the husband had no specific intention, one should refer to the reason for the oath and what prompted it. If the reason was related to purchasing absolutely, then he breaks the oath. But if it was related to him directly undertaking the purchase himself, then he does not break the oath. In the event that he breaks his oath, divorce occurs according to the majority of scholars, unless the divorce has not been completed three times, in which case he can take her back. Some scholars are of the view that if he swears by divorce with the intention of threatening or emphasizing, then an expiation for an oath is due, and divorce does not occur. It is preferable to present these matters to specialized scholars.