Is it permissible to accept money from a secular state that deals in usury, which offers monthly financial assistance without compensation?

It is permissible to take money from the state according to its conditions, even if it deals with usury or is secular, because its money is mixed between lawful and unlawful. It is permissible to accept a gift from someone whose money is mixed, as long as the gift is not the unlawful money itself. The Prophet, peace and blessings be upon him, accepted gifts from kings and dealt with Jews and polytheists.