I paid university fee of one of my relative about six years back in foreign currency and did not set any condition for return. We spoke over the phone at that time that how much would be cost of course and he explained that it would be equivalent to Pak currency this much.

Now I demanded the money back as he is well off, and asked him to pay back me money in the currency I paid. He is insisting to pay in Pak currency and according to rate which was at that time. Pak currency has devalued.

My question is, will it fall in “Riba” if I ask him to return the exact same amount which I paid as fee for him in foreign currency ( He thinks it is Riba if I ask him to return money in foreign currency the amount in Pak Rs would be higher).