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Islamic Contract – Bay’ al-Istisnā‘: Determination and Revision of Price Based on Cost
Q1: Can the price in an istisnā‘ contract be determined using murābahah cost-plus pricing?
Answer
According to AAOIFI, an istisnā‘ contract:
cannot be structured as a murābahah sale based on cost-plus pricing.
This means:
Why Is Istisnā‘ Different from Murābahah?
Murābahah
In murābahah:
✅ cost-plus sale.
Istisnā‘
In istisnā‘:
Q2: What is the AAOIFI position regarding price determination?
Answer
According to AAOIFI Shariah Standard (Para 3/2/5):
is not the nature of istisnā‘.
AAOIFI seeks to preserve:
Q3: What is the BNM position regarding determination and revision of price?
Answer
According to the BNM Policy Document on Istisnā‘ (Para 16):
at the time of contract.
However:
Q4: Why does BNM allow price revision?
Answer
Large construction and manufacturing projects may face:
Comparison Notes: AAOIFI vs BNM
AAOIFI Position
Case Study 1: Impermissible Murābahah-Style Istisnā‘ Pricing
A contractor agrees to construct a factory.
The contract states:
“cost plus disclosed profit.”
Analysis
Under AAOIFI:
❌ Not preferred under AAOIFI approach.
Case Study 2: Valid Normal Istisnā‘ Pricing
A developer agrees to construct an apartment building.
Contract Terms
✅ Valid istisnā‘ pricing.
Case Study 3: Permissible Price Revision Due to Increased Construction Cost
A contractor enters into istisnā‘ contract to build a warehouse.
Original Contract
RM13,500,000
Price Increase Calculation
13,500,000 - 12,000,000 = 1,500,000
Analysis
Price revision is permissible because:
✅ Permissible under BNM.
Case Study 4: Impermissible Price Revision Due to Extension of Payment Time
A purchaser requests:
RM10,000,000
Revised Price
RM12,000,000
Analysis
The increase is:
❌ Impermissible because it may resemble ribā.
Important Principle
In istisnā‘:
Q1: Can the price in an istisnā‘ contract be determined using murābahah cost-plus pricing?
Answer
According to AAOIFI, an istisnā‘ contract:
cannot be structured as a murābahah sale based on cost-plus pricing.
This means:
- the manufacturer is not required to disclose:
- actual construction cost; and
- profit margin separately.
- istisnā‘ is not a fiduciary (trust-based) sale.
- the price in istisnā‘ is based on:
Why Is Istisnā‘ Different from Murābahah?
Murābahah
In murābahah:
- seller must disclose:
- acquisition cost;
- profit markup.
- Cost = RM100,000
- Profit = RM20,000
- Selling price = RM120,000
✅ cost-plus sale.
Istisnā‘
In istisnā‘:
- parties only agree on:
- final contract price.
- construction cost;
- profit margin.
- istisnā‘ focuses on manufacturing obligation,
- not resale of existing asset.
Q2: What is the AAOIFI position regarding price determination?
Answer
According to AAOIFI Shariah Standard (Para 3/2/5):
- istisnā‘ cannot be converted into murābahah pricing structure;
- determining price strictly as:
is not the nature of istisnā‘.
AAOIFI seeks to preserve:
- the independent contractual identity of istisnā‘.
Q3: What is the BNM position regarding determination and revision of price?
Answer
According to the BNM Policy Document on Istisnā‘ (Para 16):
- the price of the istisnā‘ asset must be determined through:
at the time of contract.
However:
- the agreed price may later be revised if:
- construction costs increase; or
- construction costs decrease.
- practical realities of long-term construction and manufacturing projects.
Q4: Why does BNM allow price revision?
Answer
Large construction and manufacturing projects may face:
- inflation;
- increase in material prices;
- labour cost changes;
- design modifications.
- parties may mutually agree to revise the contract price after contract formation.
- price revision must relate to:
- actual construction cost changes;
- specification amendments.
- payment period is extended.
- it may resemble ribā-based increase for deferment.
Comparison Notes: AAOIFI vs BNM
AAOIFI Position
- Istisnā‘ cannot use murābahah cost-plus structure.
- No requirement to disclose cost and profit separately.
- Preserves distinct nature of istisnā‘.
- Price determined by mutual agreement.
- Price may later be revised due to construction cost changes.
- Reflects commercial practicality.
Case Study 1: Impermissible Murābahah-Style Istisnā‘ Pricing
A contractor agrees to construct a factory.
The contract states:
- Construction cost = RM8,000,000
- Profit = RM2,000,000
- Selling price = RM10,000,000
“cost plus disclosed profit.”
Analysis
Under AAOIFI:
- this resembles murābahah pricing methodology;
- inconsistent with independent nature of istisnā‘.
❌ Not preferred under AAOIFI approach.
Case Study 2: Valid Normal Istisnā‘ Pricing
A developer agrees to construct an apartment building.
Contract Terms
- Agreed contract price = RM15,000,000
- Delivery period = 3 years
- only agree on final contract price;
- no disclosure of construction cost or profit breakdown.
- Price determined through mutual agreement.
- Contract maintains nature of istisnā‘.
✅ Valid istisnā‘ pricing.
Case Study 3: Permissible Price Revision Due to Increased Construction Cost
A contractor enters into istisnā‘ contract to build a warehouse.
Original Contract
- Agreed price = RM12,000,000
- steel prices increase significantly;
- parties mutually agree to revise price upward.
RM13,500,000
Price Increase Calculation
13,500,000 - 12,000,000 = 1,500,000
Analysis
Price revision is permissible because:
- actual construction costs increased;
- both parties mutually agreed.
✅ Permissible under BNM.
Case Study 4: Impermissible Price Revision Due to Extension of Payment Time
A purchaser requests:
- additional 2 years to pay construction price.
- delayed payment period.
RM10,000,000
Revised Price
RM12,000,000
Analysis
The increase is:
- not linked to construction cost;
- only linked to payment deferment.
- increase due to time value of debt.
❌ Impermissible because it may resemble ribā.
Important Principle
In istisnā‘:
- price is based on:
- manufacturing obligation;
- agreed construction value.
- a trust-based cost-plus resale like murābahah.
- genuine construction-related changes,
not: - mere extension of payment time.
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