How can one advise a couple, especially the wife, who constantly argues with her husband in matters of religion and diminishes his respect, claiming that the wives of the Prophet argued with him, which harms the husband and may lead to divorce?

Husbands and wives must submit to Allah's law and interact kindly, for marriage is based on affection, not defiance. The husband should persuade his wife kindly and allow discussion, not impose a jurisprudential opinion on her. The wife must obey her husband, for his right is great, and pleasing him pleases Allah. As for the wife's argument using the Prophet's wives, it is incorrect, for Allah Almighty rebuked them concerning that.