Does a husband's saying to his wife: "You are forbidden to me until the Day of Judgment, and do not look at me if I am dead" constitute divorce or Dhihar, and does it necessitate expiation?

The intention and purpose of the husband behind what he uttered must be considered. If he intended divorce, it occurs. If he intended ẓihār, he is obligated to perform the ẓihār expiation (kaffārah), which is freeing a slave. If he is unable to do so, then fasting for two consecutive months. If he is unable to do that, then feeding sixty indigent persons. There is no harm in assisting him to perform the expiation. However, if he did not intend divorce or ẓihār, but rather intended an oath or uttered it without a specific intention, then an oath expiation is obligatory upon him. The husband is advised to quit smoking because it is forbidden and has health harms. It is permissible for you to take from your mother's zakāt for your treatment if your husband is unable to provide for your maintenance (nafaqah (definition)), as the cost of a wife's treatment is obligatory upon the husband. It is advisable to present the matter directly to scholars so they can inquire about the husband's intention.