What is incumbent upon a wife to do regarding her husband who deals in usury in all his expenditures (food, drink, clothing, medical treatment, zakat, charity, sacrifice), and should she leave the house, and what is her sin and duty to avoid God's wrath, especially given that her husband is far from religion?

If the origin of the husband's wealth is lawful, there is no harm in the wife benefiting from his money, even if he spends on her from usurious profits; the sin is on the husband. If all the husband's money is from usury, some scholars have gone to the permissibility of the wife benefiting from it, as money forbidden due to its earning is only unlawful for the earner, whereas money forbidden in itself is unlawful for both the earner and others. The wife should advise her husband, forbid him from usurious transactions, warn him of the consequences of unlawful earnings, and help him to repent and be steadfast.