Does the Hadith: "Three there are who supplicate to God but are not answered: a man who has a ill-tempered wife whom he does not divorce, so if he supplicates against her, his supplication is not answered, because he is the one who torments himself by living with her, while he has the means to separate from her," apply to my situation with my ill-tempered and foul-mouthed wife who harms me?

Divorce is religiously abhorred, but it is permissible out of necessity when the wife has bad manners and conduct, as Ibn Qudamah stated. The aforementioned hadith does not indicate the obligation of separating from a ill-mannered wife, but rather its permissibility and the absence of its reprehensibility. Islamic law has guided towards patience with one's wife and weighing her aspects, as in the hadith: "No believing man should hate a believing woman; if he dislikes one of her characteristics, he will be pleased with another." Islamic law also advises striving to reform the wife through admonition, then desertion in bed, then non-violent striking. If she does not respond, then the husband has the choice to divorce her or keep her, and the best option is that which is most beneficial for his religion and worldly life and causes the least harm.