What is the ruling on exchanging one currency for another (e.g., dinars for euros) when the amount is given in cash and its value is later transferred to a bank account?

This transaction is permissible if the exchange (qabd) occurs in the currency exchange. However, if the exchange does not occur and there is a delay, it is not permissible. The exchange (qabd) happens when the second person takes possession of the dinars from the first person, and then, at the same time, transfers the value of these dinars in euros to the first person's account. A bank entry of an amount into a customer's account is considered possession (qabd), similar to depositing money directly or via a bank transfer. A delay in the entry is excused, provided the currency is not disposed of during the excused period until actual receipt becomes possible.