Deferred currency trade

Q 2: Taking into consideration the permissibility of credit sales in which the price of a commodity is higher than the cash sale price, we would like to submit the following questions: A- Is it permissible for us to buy from any place (a bank etc.) a sum of 1000 Dollars for one year, provided that this sum should be repaid in Saudi Riyals; four Riyals for every one Dollar? It should be noted that the value of a Dollar at the time of purchase was only three and a half Saudi Riyals. (Part No. 13; Page No. 442) B- Is it permissible for us to purchase from any place (a bank etc.) 1000 gold pounds on credit sale for one year, provided that we will repay them in Saudi Riyals, 600 Riyals for every gold pound. It should be noted that the value of a gold pound at the time of purchase was only 500 Saudi Riyals.We would appreciate your advice. May Allah reward you and bless your good works!

A: A and B: It is not permissible, according to the evidence we mentioned in the answer of the first question, which stipulates that the exchange must be between gold and silver and what carries their same ruling such as banknotes exchanged in a hand-to-hand transaction. Delay of one of them is Riba Al-Nasi'ah (usury of delay, conditional excess for delay of payment) which is absolutely unlawful whether the price is paid through a credit sale higher than that of a cash sale or not.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.