If a person gives money to his friend who is not a money changer and says to him: change it for me. The friend then takes the money and says: I will come with it tomorrow. Does this fall under the saying of the Messenger of Allah: “Gold is to be paid for by gold, silver by silver, wheat by wheat, barley by barley, dates by dates, salt by salt, like by like, payment being made hand to hand. He who made an addition to it, or asked for an addition, in fact dealt in usury. The receiver and the giver are equally guilty.” In other words is this permissible?
الوكالة في الصرف