فِقهُ السَّلَمِ وَالاستِصنَاع — البَيعُ الآجِلُ وَعَقدُ الاستِصنَاعِ فِي الفِقهِ الإِسلَامِيّ: بَيعُ السَّلَمِ [البَيعُ الآجِلُ لِلسِّلَعِ حَيثُ يُدفَعُ الثَّمَنُ الآنَ لِتَسلِيمِ بَضَائِعَ مَوصُوفَةٍ بِدِقَّةٍ لَاحِقًا وَهُوَ مَسمُوحٌ بِهِ كَاستِثنَاءٍ مِن قَاعِدَةِ النَّهيِ عَن بَيعِ مَا لَا تَملِكُ] وَبَيعُ الاستِصنَاعِ [عَقدُ طَلَبِ التَّصنِيعِ حَيثُ تَطلُبُ إِنتَاجَ بُنُودٍ مَوصُوفَة] وَتَطبِيقَاتُهَا فِي التَّمويلِ الزِّرَاعِيِّ وَأَسوَاقِ رَأسِ المَالِ الإِسلَامِيَّة
Fiqh al-Salam wal-Istisna' (فِقهُ السَّلَمِ وَالاستِصنَاع — Jurisprudence of Forward Sale and Manufacturing Contract; *salam*: from *s-l-m*: to deliver, to give fully; salam contract = delivery contract; *istisna'*: from *s-n-'*: to make, to manufacture; istisna' = commissioning manufacture; BAY' AL-SALAM [the forward commodity sale]: [1] definition: a sale where the price is paid immediately and the delivery of the commodity is deferred to a specified future date; [2] the general prohibition it appears to violate: 'Do not sell what you do not have' [hadith, Abu Dawud]; the Prophet prohibited selling a commodity before you own it; if I sell wheat for June delivery in January, I don't own the June wheat yet; [3] why salam is permitted despite this: the Prophet explicitly permitted salam as a named exception [hadith: 'Whoever does salam, let them do it in a known volume and a known weight to a known term']; the exception was granted because it met real economic needs [farmers needed pre-harvest financing]; [4] conditions for valid salam: [a] full price must be paid at contract [not deferred]; [b] the commodity must be precisely described [type, quality, quantity, grade — eliminates the uncertainty that gharar prohibits]; [c] delivery date must be specified; [d] the commodity must be a standardized type [not a unique individual item]; [e] delivery location must be specified; [5] agricultural finance: the primary classical use was providing farmers pre-harvest capital; a merchant pays now for wheat to be delivered at harvest; the farmer has working capital; the merchant has a price-locked forward purchase; [6] what salam cannot be used for: unique items [a specific horse, a specific house]; items that cannot be fully described [artwork]; [7] can the salam asset be resold before delivery: Hanafis say no [parallel salam is not allowed — you cannot sell forward what you haven't received]; some contemporary fatwa committees allow secondary market trading of salam certificates under specific conditions; BAY' AL-ISTISNA' [the manufacturing order contract]: [1] definition: a contract to commission the manufacture of a specified item; the manufacturer uses their own materials and skill to produce the commissioned item; [2] how it differs from salam: in salam, the buyer pays the full price upfront and waits for delivery; in istisna', payment can be deferred or staged; in salam, the commodity must exist in nature [wheat, cotton, metals]; in istisna', the item doesn't exist yet and must be manufactured; [3] Hanafi position: istisna' is valid on the basis of custom ['urf] — it has been practiced in commerce for centuries; [4] payment structure: istisna' allows flexible payment — can pay in advance, can pay in installments during production, can pay on delivery; [5] modern application: istisna' is used in Islamic finance for [a] construction financing — commissioning a building that doesn't exist yet; [b] equipment manufacturing — commissioning specific machinery; [c] infrastructure — roads, bridges, power plants; [6] parallel istisna' [istisna' mawazi]: a bank can receive an istisna' contract from a client [client commissions the bank to arrange the manufactured item], then simultaneously enter a parallel istisna' with the actual manufacturer; the bank intermediates without using interest-based lending; this is the primary mechanism for Islamic project finance; [7] AAOIFI standard 10 on istisna' governs its use in Islamic finance; SALAM IN MODERN CAPITAL MARKETS: agricultural sukuk in Indonesia and Malaysia use salam-like structures to finance crop production; the forward delivery is matched with distribution chains; salam certificates allow investors to participate in agricultural production without bank intermediation) are the two Islamic forward contracts.
The Prophet’s Named Exception
Classical Islamic law prohibits selling what you do not own. The Prophet’s own statement — “Do not sell what you do not have” — is clear. Yet the same Prophet explicitly permitted salam: “Whoever does salam, let them do it in a known volume, a known weight, to a known term.”
This explicit permission is the foundation of salam’s legitimacy. It is not a later scholarly accommodation but a named exception granted by the Prophet himself. The condition attached — precise description of the commodity — reveals the legal theory: what makes speculation-in-disguise prohibited is uncertainty about what will be delivered; a precise description that eliminates this uncertainty also eliminates the prohibited gharar.
Istisna’ and the Flexibility of Payment
Where salam requires full payment upfront, istisna’ — the manufacturing order — allows payment to be staged across the production period. This single difference makes istisna’ far more useful for project finance: a client commissioning a factory can make milestone payments as construction progresses, not a single upfront payment that would require massive liquidity before any value has been created.
The parallel istisna’ structure enables Islamic banks to intermediate manufacturing and construction projects without interest-based lending: the bank takes the commissioning contract from the client, passes the actual production to the manufacturer under a parallel contract, and earns a margin between the two contracts.
Pre-Harvest Capital and Agricultural Finance
The salam contract’s classical use case remains relevant. Smallholder farmers in Southeast Asia and South Asia often need capital before harvest to buy inputs, pay labor, and sustain their families. Salam provides this capital without riba: the buyer pays now for a specified quantity and quality of crop at harvest. The price paid is lower than the expected market price at harvest — that discount is the buyer’s return, not an interest charge.
See also: Riba, Fiqh Al Buyu, Fiqh Al Gharar, Fiqh Al Ijarah Al Mawsufah, Fiqh Al Ijtihad Wal Taqlid