Should debts that were paid off with usurious money be repaid after repentance?

What was used of usurious gains must be discharged, whether for personal needs or debt repayment, and disbursed for the benefit of Muslims or for the poor and needy. Debts repaid with such gains are cleared because the prohibition pertains to the liability, not to the money itself. Al-Ghazali said: "If he gives it to a poor person, it is not forbidden for the poor person; rather, it is lawful and good."