Is it permissible for a female employee to waive usurious benefits deposited in the university's savings fund, allowing the university to dispose of them, given her knowledge that if she did not waive them, she could take them and distribute them to the poor?

It is not permissible to open an account in a usurious bank or to transfer one's salary to it, except in cases of extreme necessity, such as the absence of an Islamic bank. It is also not permissible to subscribe to an optional savings fund if its money is invested in prohibited ventures. However, if the savings are obligatory, then there is no sin upon the subscriber, and the illicit gains resulting from it must be disposed of by spending them on charitable causes.