Definition
Salam (سلم) is the classical Islamic forward-sale contract: the buyer pays the full price upfront today, and the seller commits to deliver a precisely-specified fungible commodity at a defined future date. The Prophet ﷺ explicitly approved salam for measurable agricultural commodities (Sahih Muslim 1604), making it the narrow exception to the general bay' al-ma'dum prohibition on selling what is not yet possessed.
The four Shariah conditions
Per AAOIFI Standard No. 10, a valid salam contract requires:
- Full payment at contract. No deferred payment on the buyer's side. This is the structural defence against the contract degenerating into a bilateral debt.
- Precisely-specified subject matter. Quantity, quality, grade — all defined. Otherwise the contract degrades into gharar.
- Defined delivery date. Vague "when ready" terms invalidate the contract.
- Fungible commodity only. Salam works for wheat, dates, oil — things measurable by weight, volume, or standard grade. It does not work for monetary assets.
Why salam does not authorise crypto futures
A common attempt to defend Bitcoin futures contracts is to analogise them to salam: "the buyer commits today, the seller delivers later, just like salam." This analogy fails on two structural grounds:
- Cryptocurrencies are treated by contemporary scholars as monetary or quasi-monetary assets, not fungible commodities in the salam sense. Bitcoin and ETH are exchanged, not consumed; they function as units of account and store of value, not as agricultural produce. Salam is structurally limited to commodities that are both standardised and consumable.
- Modern cash-settled "futures" never deliver the underlying — they settle in fiat or stablecoin against the price difference. Salam requires actual delivery of the specified commodity. A cash-settled contract is not salam at all; it is a synthetic price-bet.
This is why both AAOIFI and the OIC Fiqh Academy treat crypto futures as failing the bai' al-sarf framework rather than qualifying under salam. The structural identity is monetary exchange, and monetary exchange must be immediate (taqabudh).
Where salam-style structures may legitimately appear in tokenised markets
Tokenised salam contracts for actual commodity production (e.g., tokenised pre-financing for halal agricultural output) are an active area in Islamic finance research. These would satisfy the four conditions because the underlying is a real fungible commodity and full payment is at contract time. None of the major centralised exchanges currently list salam-tokenised products in a form that meets our four-gate screen.