Is it permissible for a daughter to take money deposited by her father in a usurious bank (both the principal and the interest) to cover her marriage expenses, or should she only take the interest without his knowledge to spend it on charity, knowing the unlawfulness of interest and her need for the money?

It is forbidden to place money in usurious banks, for the one who does so is consuming and enabling usury. The Messenger of Allah, peace and blessings be upon him, cursed the one who consumes usury, the one who enables it, its scribe, and its two witnesses. The father must be advised to abandon dealing in usury and to withdraw the money, along with repentance.

It is not permissible to take usurious interest if the money is in an account specifically for the daughter; it must be spent on charitable causes. However, if the money is in the father's account and he has not transferred ownership of it to his daughter, then she may take money from him, because it is her father's money and came to her through a permissible means.