Method two:
The contract grants the right to take delivery of the goods and to receive the price immediately, with both sides’ interests guaranteed by the exchange authority. This arrangement is permissible under Sharia, subject to the established conditions of sale.

Method three:
The contract calls for delivery of a commodity defined by specification and owed in liability at a deferred date, with payment made upon delivery, and it contains a stipulation requiring the transaction to conclude with actual delivery and receipt. This contract is impermissible because both counter-values are deferred. It may, however, be modified to satisfy the recognized conditions of a salam (pre-payment) sale; once those conditions are met, it becomes lawful. Likewise, the commodity purchased through salam may not be resold before it is taken into possession.

Method four:
The contract provides for delivery of a commodity defined by specification at a future date and payment upon delivery, yet it lacks any clause obligating the parties to end with actual delivery and receipt; instead, the position can be closed out through an offsetting contract. This is the most widespread form in commodity markets, and it is impermissible from the outset.

2 – Currency trading:
Currencies are traded on organized exchanges by the same four methods outlined for commodities. Buying and selling currencies under methods three and four is forbidden. Under methods one and two, it is permissible provided the familiar conditions of currency exchange are fulfilled.