Q: Before our marriage, my wife financed a car with an interest-bearing loan. I am not on the loan or title and had no involvement in the original contract. After marriage, I voluntarily began making the monthly payments. About $15,000 remains.
Recently, I became concerned that making these payments may involve me in riba, so I offered to pay the entire balance immediately. My wife asked me to continue the regular payments for two more months because of a pending diminished-value insurance claim. I made one more monthly payment, despite being financially able to pay off the loan.
My questions are:
Am I sinful or considered the “payer of riba” mentioned in the hadith because I make payments on my wife's interest-bearing loan, even though I am not the borrower or owner? Was I sinful for making another monthly payment after I was able and willing to pay off the loan in full?