Is it permissible for a wife to help her husband with money from her Zakat without informing him that it is from Zakat, in order to buy what he needs or to assist him with the expensive costs of his educational courses?

The ruling on paying Zakat to the husband, the permissibility of not informing the recipient that it is Zakat for those who accept it, that the monetary value is not sufficient for Zakat but it must be paid in kind (as money, not goods), and that Zakat is not permissible for students of worldly sciences unless they are poor.