Should I repay the usurious house loan, or should I give the money to my relative who defaulted on a bank loan taken out in my name?

Borrowing with interest is a grave error and a sin that necessitates sincere repentance; by abandoning the sin, regretting it, and resolving not to return to it, and by hastening to get rid of the interest-based loan. It is not obligatory to repay the forbidden interest, but only the principal of the loan. If it is possible to circumvent it, there is no sin. If accelerating the repayment waives the interest, then that is obligatory; otherwise, it should not be accelerated so as not to strengthen the interest-based bank. It is not permissible to burden a friend with the interest accrued from an interest-based loan because that is usury; rather, he should be helped to repay his loan without stipulating interest. If the loan is in your name, then you are a partner in the sin and obligated to repay it to the bank.