Is a gift from one who deals in riba (usury or interest) accepted?

Question:
Is the gift or present of one who deals in riba (usury or interest) accepted?

Answer:
If all his wealth is from riba (usury or interest), no. But if he has riba (usury or interest) transactions and other transactions, there is no harm; just as the Prophet (peace and blessings be upon him) bought food from the Jews, and they were dealing in riba (usury or interest), because they consume riba (usury or interest), and they have other transactions. But if a person has no income except riba (usury or interest), then no, his transactions are not accepted.
Q: If a person has mixed wealth, between lawful and unlawful, is he to be feared regarding its non-acceptance?
A: There is no harm in dealing with the mixed wealth, and he must fear Allah and be cautious.
Q: Is he to be feared regarding the non-acceptance of supplication?
A: It is among the causes of the non-acceptance of supplication; consuming riba (usury or interest) and consuming unlawful things are among the causes of the non-acceptance of supplication.