Is it permissible to give usurious money to a poor person for the treatment of his daughter without informing him of the source of the money, and is it permissible to ask him for a reduction in the rent price?

It is permissible to give usurious money to a poor person with the intention of disposing of it, whether it is used for his daughter's treatment or for other needs, and there is no need to inform him that it is usurious money; for it becomes lawful and pure for him. As for money acquired from a corrupt contract, such as usury and gambling, if it is spent, it becomes permissible for whoever takes it rightfully. However, requesting a reduction in rent is permissible, but linking that to giving him usurious money, while deluding him into thinking it is charity from pure wealth, is considered deception and forbidden fraud.