Some Indian laborers want to transfer certain sums of money to their country, so I carry out this task on their behalf by giving that money to someone who is departing to India so that he delivers them by hand. In return, I take a commission similar to that charged by the bank. Moreover, I would, sometimes, lend them whatever sums they want, exchange them into Rupees and transfer to their country. However, upon collecting my money, later on, the exchange rate of the Rupee against the Dinar varies; therefore, I may gain or lose. Is such a transaction valid from the view of Islamic Sharia?
