The ruling on exchanging one currency for another at a rate other than the current day's rate

Question:
He says: Honorable Shaykh, may Allah grant you success. I deposited a sum of money in foreign currency with a person for two years. He says: After this period, I asked for my money back, so he returned it to me in Saudi riyals, but at the exchange rate from two years ago, not at the current rate. Given that the value of that foreign currency has risen significantly, is it permissible for me to demand the difference?

Answer:
This is currency exchange. He has your foreign currency, so when you asked for it back, he returned it to you in exchange. This is currency exchange. If the types differ, an increase is permissible, but immediate possession is required, and it must be at the rate of that day. It must be at the rate of that day, and immediate possession is required. Yes.