Is it permissible for the wife to buy cigarettes from her monthly allowance, and does divorce occur if she buys cigarettes from this allowance?

If the husband, by his oath, intended that he would not buy cigarettes for his wife with his money, then divorce does not occur if she buys them with her own money. However, if he intended to prevent her from buying cigarettes with the money he gives her, then divorce occurs if she buys cigarettes with this money. The reference point for oaths is the intention of the one who swears the oath. It is permissible for the husband to prevent his wife from buying cigarettes, even if it is with her own money, because it is harmful to her health.