What is the ruling on withdrawing a deposited amount from a usurious bank before the agreed-upon time, knowing that the bank takes a percentage for early withdrawal, and that the one who supports me financially does not approve of early withdrawal?

It is impermissible to deposit money in interest-based (usurious/ribawi) banks unless there is a necessity, such as the absence of an Islamic alternative. In such a case, it must be placed in a current account. As for depositing money to obtain interest, it is forbidden due to the Almighty's saying: ﴿O you who have believed, fear Allah and give up what remains [due to you] of interest, if you should be believers.﴾ And the Prophet, peace and blessings be upon him, cursed the one who consumes interest, the one who pays it, its scribe, and its two witnesses.

If the money is an investment deposit, it is obligatory to withdraw it if the percentage of loss is small, as repentance from the forbidden. However, if the percentage is large and significant, it is permissible to leave it until its term to avert harm, along with sincere repentance, regret, and a firm resolve not to return to it. Any interest gained must be disposed of by spending it on the welfare of Muslims or giving it to the poor and needy.