The Borrower’s Return of the Excess Payment

Question:
Honorable Shaykh, if the borrower repays the loan with an increase, is he allowed to claim back the value of this increase from the lender?

Answer:
No, if he paid it and gave it as a gift, that is what is not permissible to take back. . When a person gives something as a gift or donation, and the recipient or the one to whom it was donated has taken possession of it, he cannot take it back. They said, except for a father in what he gives to his son. A father is allowed to take it back, but for anyone else, this is forbidden. Yes.