Is it permissible to join a vocational training program funded by a fund that provides interest-based loans, and what is the ruling on donating the entire wage earned if it is not permissible?

If an entity is funded solely by an interest-based loan, and all its money is unlawful, then it is impermissible to work for it or to engage in transactions with it, whether buying or selling. The salary received is ill-gotten gain that must be given away as charity and spent on the welfare of Muslims. However, it is permissible for a poor person to take from it an amount sufficient for their needs.