Is it permissible for a wife to ask her husband for intercourse three times a week, and is the husband entitled to beat her because of that?

Intercourse is a right for the wife over her husband, and she is permitted to request it from him; it is not considered ill-mannered. The husband must fulfill his wife's desire to the best of his ability, and this should not be at the expense of his other wife. Striking the wife because of her request for intercourse is not permissible, especially if it is a severe beating. If the wife is observant of her religious duties and manages her household affairs, she should not be divorced for such a reason; rather, her desire should be satisfied to the extent possible.