LessonsBab al-Sarf: Precious-Metal Exchange, Possession and Composite GoodsQuiz

Sarf is the exchange sale of monetary metals such as gold and silver. Rules for selling merchandise for money do not transfer unchanged to exchanging one monetary consideration for another.
Two questions govern this chapter: Are the two metals of the same genus, and have both parties received the exchanged considerations before separating? The first determines required equality; the second concerns prohibited delay.

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Bab al-Sarf: Precious-Metal Exchange, Possession and Composite Goods

Same-metal and cross-metal exchanges, session possession, bulk exchange, a silver-adorned sword and silver utensils Read the bilingual lesson for Bab al-Sarf: Precious-Metal Exchange, Possession and Composite Goods and test your understanding with a focused quiz.

Lesson

1. Why sarf has its own rules

Sarf is the exchange sale of monetary metals such as gold and silver. Rules for selling merchandise for money do not transfer unchanged to exchanging one monetary consideration for another.
Two questions govern this chapter: Are the two metals of the same genus, and have both parties received the exchanged considerations before separating? The first determines required equality; the second concerns prohibited delay.

2. Defining the exchange contract

الصرف هو البيع
Translation: Sarf is a form of sale.
The complete definition additionally requires both considerations to belong to the class of monetary valuables. The two considerations are the assets exchanged by the two contracting parties.
Silver exchanged for gold is sarf. A cloth sold for gold is an ordinary sale; the distinctive sarf rules do not automatically extend to every feature of that sale.

3. Equality in same-metal exchange

مثلا بمثل
Translation: Equal for equal.
When gold is exchanged for gold, or silver for silver, the weights must be equal and both sides must take possession within the same session.
Example: 10 grams of silver for 10 grams of silver, delivered on both sides before separation, meets these two conditions. An exchange of 10 for 11 grams violates equality even if settled immediately.

4. Jewellery against unworked metal

Quduri does not allow craftsmanship or superiority to justify unequal weights in an exchange of the same monetary metal. Worked jewellery remains subject to the equal-weight requirement when bartered for gold of the same kind.
For example, 20 grams of gold jewellery cannot be exchanged for 23 grams of gold merely because one party assigns a premium to workmanship. A distinct sale or service arrangement raises a different legal analysis and must not be confused with this barter.

5. Monetary valuation does not replace weight

Higher market value is different from equality of weight. An old gold coin may have collectible value, yet such value does not simply remove the weight-equality rule for exchanging gold against gold.
Thus an 8-gram old gold coin cannot be directly bartered for 10 grams of gold merely because its market valuation is higher. Contract type and classification of both considerations must be established.

6. Mutual possession before separation

قبض العوضين قبل الافتراق
Translation: Possession of both considerations before separating.
Taqabud means actual receipt by each side of the due consideration within the contracting session. A promise to pay later does not fulfil this condition.
If one silver bar is handed over immediately but the counter-bar remains undelivered when the parties separate, the sarf contract does not remain valid.

7. The contracting session

The contracting session is the setting in which offer and acceptance are followed by the parties remaining together in that transaction. The text uses separation as the limit for completing both receipts.
For instance, a gold-for-silver agreement is not completed merely by signing a receipt while the gold or silver remains undelivered. A documentary promise is not automatically possession.

8. Gold against silver

جاز التفاضل ووجب التقابض
Translation: Unequal amounts are allowed, but mutual possession is obligatory.
Gold and silver are different genera. Hence their weights need not match, yet both considerations must be received before the parties separate.
For example, exchanging 5 grams of gold for 400 grams of silver is not invalid merely because the weights differ. Both sides must nevertheless take possession within the contract session.

9. Comparing two exchange cases

Gold ↔ gold: equal weights and immediate receipt on both sides.
Silver ↔ silver: equal weights and immediate receipt on both sides.
Gold ↔ silver: equal weights are not required, but both receipts remain obligatory in the session.
Rather than memorising disconnected cases, distinguish equality from delay: differing genera remove the equality requirement, not the session-possession requirement.

10. Only one party receives the countervalue

Quduri rules that if the parties separate before receiving both considerations—or before receiving even one of them—the exchange is invalid. Complete clarity about price and weight does not cure the missing possession.
Example: 30 grams of gold are delivered, while 1,800 grams of silver are promised for tomorrow. Even with full consent and specified amounts, the second consideration was not received in the required session.

11. Distinguishing partial delivery

Partial receipt must be distinguished from a complete failure of exchange. Later in this section Quduri discusses a silver vessel for which only part of the price has been received.
The portion supported by the required receipt may remain valid, whereas the portion left unsettled fails. This conclusion must not be applied indiscriminately to every composite item; divisibility and damage matter.

12. Disposal before receiving exchange money

ولا يجوز التصرف في ثمن الصرف قبل قبضه
Translation: Disposing of the price of sarf before receiving it is impermissible.
Here disposal means entering a further transaction involving an exchange consideration that has not yet been received. Sarf requires receipt as a condition for the original contract to remain valid.
Selling onward the silver owed to one before actually receiving it illustrates the prohibited disposal.

13. Bulk exchange without matching weights

Quduri allows bulk exchange (mujazafah) of gold against silver: the identified, present items are exchanged as a whole without first determining matching weights.
Because the two metals are different genera, equality of weight is not required. Bulk contracting does not remove the obligation of mutual possession before separation.

14. Limits of bulk exchange

Permission for bulk exchange is not a general licence to exchange unidentified or absent goods. The two particular, present countervalues may be traded without matching their weights when the metal genera differ.
For example, exchanging a particular gold bar for a particular pile of silver in the same meeting does not fail for inequality of weight. Promised delivery after separation still raises the prohibited-delay problem.

15. A silver-adorned sword as a composite sale

Quduri discusses a sword decorated with silver. The composite object contains two legally distinguishable elements: the sword itself and its silver ornamentation, sold for one overall amount.
If the price is silver dirhams, the ornament-for-dirham element is a sarf exchange of silver for silver, while the non-silver sword component is an ordinary sale. Their possession requirements should not be conflated.

16. Allocating the price of a composite item

Suppose a sword and its silver fittings sell together for 100 silver dirhams, while the fittings contain silver equivalent in weight to 50 dirhams. In the analysed arrangement, 50 dirhams are allocated to the silver fittings and the remainder to the sword.
The silver-for-silver part must not involve a weight shortfall and must satisfy possession requirements. The sword component is assessed separately.

17. What an immediate payment of 50 covers

In Quduri’s example, the buyer immediately pays 50 of the total 100 dirhams. These count toward the silver ornament even if the buyer does not expressly allocate them.
The reasoning favours fulfilling the legally mandatory contemporaneous receipt first. The other 50 dirhams are thus assigned to the separate sword element in this illustration.

18. Words referring to the price of both parts

Quduri includes a case where the buyer says that 50 dirhams are paid toward the prices of both the sword and its ornament. For this particular composite sale, the amount is still allocated to the silver part.
This is not an open licence to rearrange the price in any contract. It is an interpretation grounded in the required sarf receipt and the distinct components of the sold object.

19. Failure to settle the silver ornament

If the parties separate without the required exchange for the silver ornamentation, the silver component of the transaction fails.
The next issue is whether the sale of the sword can survive independently. Quduri makes this depend on whether its silver ornamentation can be detached without damage. These are two distinct legal outcomes.

20. Where separating the ornament causes damage

If removing the silver ornament would damage the sword, it is not possible simply to discard the ornament contract and leave an independently deliverable sword sale.
Under Quduri’s stated case, the sword component also fails, because that item cannot be separated and delivered intact as a distinct subject of sale.

21. Where the ornament detaches harmlessly

If the silver fittings can be removed without harming the sword, the non-silver item remains separately deliverable. In that case, the silver part fails for lack of sarf receipt, while the sword sale can remain valid for its allocated consideration.
The controlling distinction is not relative market value but whether the subject can be legally separated and delivered intact.

22. Partial payment for a silver vessel

Quduri next considers a silver vessel sold for silver where the seller receives only part of its price before the parties separate.
Here the entire sold item is silver, so sarf rules apply to all of it. The part corresponding to completed possession remains valid, while the unpaid portion fails upon separation.

23. Co-ownership arising from partial settlement

For example, a vessel weighing 100 silver dirhams is sold for 100 silver dirhams, but only 60 are exchanged in the session. Assuming other conditions are met, the portion corresponding to the 60 received dirhams is validly sold, while the unsettled portion remains with the original owner.
This creates co-ownership of the vessel. The numerical illustration explains allocation; the actual shares are determined by the legally relevant transaction.

24. A third party owns part of the vessel

If, after the sale, it emerges that part of a silver vessel actually belonged to a third party, the purchaser may either take the remaining valid portion for its corresponding price or reject the transaction.
The co-ownership here arises from an undisclosed third-party right rather than the purchaser’s own non-payment. Because shared ownership is a defect in a vessel, the purchaser receives an option.

25. A third-party claim to part of an ingot

If the item is a nuqrah—an unworked silver ingot—and a third party establishes title to a part, the buyer takes the remainder for its proportional price without the same option to reject that arises with the vessel.
The reason is divisibility: the ingot can be apportioned without the kind of functional impairment involved in jointly owning a finished vessel. The distinction turns on whether partition diminishes the nature of the item.

Practice questions

Question 1

What characterises both considerations in sarf?

  • Ordinary merchandise
  • Monetary valuables
  • Land alone
  • Services alone

Question 2

What is wrong with immediate exchange of 10 g silver for 11 g silver?

  • No possession occurred
  • Equal-weight condition was breached
  • The genera differ
  • Only a price was recorded

Question 3

What is the effect of workmanship when swapping gold jewellery for raw gold?

  • It permits unequal weights
  • Weights must differ
  • It does not waive equal weight
  • It removes possession requirement

Question 4

Which condition remains essential for gold exchanged for silver?

  • Identical weights
  • Both must be jewellery
  • Identical market valuation
  • Mutual possession in the session

Question 5

When may gold and silver of unequal weights be validly exchanged?

  • Both are handed over in the session
  • One arrives next day
  • A receipt alone is signed
  • Only one side takes possession

Question 6

What happens if one consideration remains unreceived at separation?

  • It is merely disliked
  • The sarf contract becomes invalid
  • A grace period always applies
  • The weights change

Question 7

Can a promise or receipt automatically replace possession in sarf?

  • Yes in every case
  • Only for gold
  • No, receipt of the consideration is still required
  • Only with two witnesses

Question 8

What does taqabud mean in sarf?

  • Both parties receive their considerations
  • Identical prices
  • Only a written agreement
  • Only one party consents

Question 9

Which requirement changes when gold and silver are different genera?

  • Possession is forbidden
  • Immediate receipt becomes unnecessary
  • Equal weight remains mandatory
  • Equal weight is no longer required

Question 10

Which scenario illustrates permissible bulk gold-for-silver exchange?

  • Unknown absent gold delivered next year
  • Exchange identified present gold and silver immediately
  • Swap silver 10 for 15
  • No receipt by one party

Question 11

Which condition is not waived by bulk gold-for-silver sale?

  • Mutual receipt in session
  • Being different genera
  • Only gold may be present
  • Termination of all contracts

Question 12

Why is onward sale of unpaid sarf consideration prohibited?

  • The metal is expensive
  • Crafting jewellery is hard
  • It disposes of an unreceived consideration
  • Parties live in different cities

Question 13

What must be distinguished in a silver-adorned sword sold for silver dirhams?

  • Only hilt and sheath
  • Silver fittings and the remaining sword
  • Buyer and witness only
  • Quality and appearance only

Question 14

Sword costs 100 dirhams; silver fittings contain 50 dirhams of silver. What do 50 paid in session cover?

  • Only the sword body
  • Neither part
  • The silver fittings
  • A third party’s interest

Question 15

Does the sword allocation fail if the buyer does not expressly assign the 50 dirhams?

  • Yes, always invalid
  • No, the 50 count toward the silver
  • The 50 become a gift
  • Only sword weight matters

Question 16

The buyer says the 50 are toward both components; what is Quduri’s special allocation?

  • Always split equally
  • The sale is a gift
  • Payment cannot be returned
  • Allocated to silver to meet the mandatory sarf receipt

Question 17

Sarf settlement for fittings fails; removing them would damage the sword. What follows?

  • Both remain valid
  • Only sword survives
  • Neither component survives
  • Only fittings survive

Question 18

If silver fittings detach without damage, which ruling applies?

  • Fittings fail; sword portion may stand
  • Whole sale always fails
  • Both valid without receipt
  • Only silver valid, sword fails

Question 19

A 100-dirham-weight silver vessel sells for 100 silver dirhams; only 50 are received. What follows?

  • Entire sale unconditionally valid
  • Whole sale turns into gift
  • Price doubles
  • Valid for received portion, invalid for remainder

Question 20

What arises in a silver vessel after only a valid portion of its price is settled?

  • Sole ownership
  • Co-ownership of the parties
  • An automatic lease
  • Endowment

Question 21

Part of a silver vessel belongs to a third party. What may the buyer do?

  • Always pay more
  • Take entire vessel for free
  • Take valid remainder at proportional price or reject
  • Break vessel immediately

Question 22

Why does third-party title produce different options for a vessel and raw silver ingot?

  • Ingot partition lacks the vessel’s functional defect
  • Vessel is gold
  • Ingot always costs more
  • Title can never be proved

Question 23

A third party proves title to part of an unworked silver ingot. What follows?

  • Unrestricted option to reject everything
  • Entire ingot free
  • Demand gold instead
  • Take remainder at proportional price; no vessel-style option

Question 24

Which two conditions apply to same-metal sarf?

  • Written agreement only
  • Equal weights and mutual receipt in session
  • Both must be scholars
  • Only market prices

Question 25

Which statement correctly describes gold-for-silver exchange?

  • Unequal weight barred, delay allowed
  • Equal weight, no possession needed
  • Weights may differ; both must receive
  • Nothing need be identified

Question 26

Silver due in sarf is resold before its receipt. Which rule governs?

  • No disposal of sarf consideration before receipt
  • Prohibition on wine only
  • Land inspection option
  • Partnership in pledge

Question 27

A 100-dirham-weight silver vessel sells for 100 dirhams, 60 received. What does this teach?

  • Receipt is never required
  • One party necessarily owns all
  • Only portion supported by receipt survives
  • Profit is always fixed

Question 28

How does damage from removing sword fittings affect the contract?

  • No impact
  • Sword sale is also affected if it cannot be delivered separately
  • Only weight decreases
  • Riba ceases to exist

Question 29

What is a nuqrah in the present discussion?

  • Finished silver vessel
  • Fired brick
  • Gold jewellery
  • Unworked silver ingot

Question 30

Which conceptual distinction recurs throughout these sarf cases?

  • High prices alone
  • Age of parties
  • Separate weight equality, timely possession and divisibility
  • Only jewellery appearance

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