Is it permissible to take a loan from an Islamic bank to repay an amount embezzled five years ago? And should the amount be repaid at its original value or with its returns? And will repentance be accepted after repayment and seeking forgiveness from the owner of the money?

You must repent of the sin and return the embezzled amount at its original value. There is a difference of opinion regarding the obligation to return the proceeds of its investment. Sincere repentance includes remorse, abstaining from the sin, resolving not to return to it, and restoring injustices or seeking forgiveness from those wronged. The embezzled amount must be repaid, even in installments, and it is permissible to take out an interest-free loan for this purpose. One who repents should hope for the acceptance of their repentance and fear Allah's punishment.