Is it permissible to accept an invitation to break the fast from someone whose wealth is mostly unlawful?

It is permissible to accept an invitation from someone whose wealth is predominantly unlawful, based on the Prophet's acceptance of the Jews' invitation, even though Allah described them as taking usury and consuming people's wealth through illicit means. It was said, "His gain is for you, and his loss is upon him." It is also permissible not to accept his invitation, as a deterrent and a reproach for his unlawful earnings. This is preferable if it will influence him to abandon the wrongdoing.