Is it permissible to take a loan from a bank without interest for a specific period, knowing that if the full amount is not repaid before the end of the period, interest will be imposed? And do the intention and ability to repay before the end of the period make this loan permissible?

It is not permissible to take a loan that stipulates the payment of interest in case of late repayment, except in situations of dire necessity, because this condition is considered prohibited usury (riba). A prior intention to repay in order to avoid interest does not permit entering into a contract that includes this condition, except out of necessity or a need that is on par with necessity.