Is a wife considered sinful if she abandons her husband and refuses to fulfill his requests, as a result of his refusal to spend on her and her medication despite his affluence, and her preference to preserve her health?

The wife's maintenance is legally obligatory upon the husband. If he falls short in providing it, it is permissible for the wife to take from his money an amount equivalent to her maintenance. As for the wife's medical treatment, it is not obligatory upon the husband according to the four Imams, but it is preferable for him to spend on her if he is able. The grant given by the state to the wife is not permissible for the husband to take unless she gives it willingly. It is permissible for the wife to abandon her husband if he wrongs her. We advise seeking reconciliation and involving righteous people to mediate. If the husband persists in his injustice, the wife has the right to refer the matter to the Sharia court.