6.3 Market Conduct & Prohibited Trade Practices

Key Takeaways

  • Islamic commercial jurisprudence establishes market integrity upon the pillars of free price discovery, zero information asymmetry, genuine supply-demand dynamics, and absolute transparency.

  • Classical trade prohibitions directly mirror modern financial market malpractices: Najsh corresponds to wash trading and pump-and-dump schemes; Talaqqi al-Rukban mirrors front-running and predatory exploitation of uninformed sellers.

  • Ghish (fraudulent adulteration) and Tadlis (deliberate concealment of defects) violate contractual consent and trigger the purchaser's legal option to cancel the contract (Khiyar al-Ayb).

  • Ihtikar (hoarding essential goods to artificially squeeze market supply and inflate prices) is severely condemned as an unearned exploitation of public vulnerability.

  • Risywah (bribery) is unequivocally forbidden under Shariah; in Malaysia, commercial organizations face strict statutory corporate liability under Section 17A of the MACC Act 2009 for corrupt acts committed by associated persons unless adequate procedures (TRUST) are proven.

Last updated: October 2026

Market Conduct & Prohibited Trade Practices

Marketplaces in Islamic commercial law are not unregulated free-for-alls where might makes right, nor are they rigid command economies where prices are arbitrarily dictated. Islamic jurisprudence envisions an open, transparent, and competitive market where prices are determined by genuine, unmanipulated forces of supply and demand (al-as'ar bi yadi Allah). When the Prophet Muhammad (PBUH) migrated to Medina, one of his first institutional actions was establishing the Medina Market, decreeing that it must remain free from extortionate market fees, artificial trade barriers, monopolistic cartels, and fraudulent manipulations. This historic foundation forms the bedrock of modern Islamic market conduct regulation.


Ethical Market Behavior: Price Discovery & Market Integrity

For a market to be ethically sound (halal) and legally valid under Shariah, four foundational market conditions must prevail:

  1. Freedom of Contract and Voluntary Consent (Taradi): All trades must arise from genuine mutual consent devoid of coercion, misrepresentation, or artificial panic.
  2. Transparent Price Discovery: Market prices must reflect truthful supply and demand conditions rather than synthetic shortages, collusive bidding, or rigged quotations.
  3. Symmetry of Information: Neither counterparty should exploit monopolized material facts to extract unearned value from an uninformed market participant.
  4. Accessibility and Unhindered Entry: Markets must be accessible to all legitimate producers, traders, and consumers without predatory gatekeeping.

To safeguard these conditions, classical Islamic jurisprudence developed a detailed taxonomy of prohibited trading practices that distort market integrity.


Prohibited Market Manipulations & Unethical Trading Practices

1. Ghish (Fraud, Cheating, and Deception in Quality or Quantity)

Ghish encompasses any deceitful act whereby a seller misrepresents the quantity, quality, provenance, or characteristics of an asset. The classical precedent occurred when the Prophet (PBUH) walked past a heap of grain in the Medina market, thrust his hand inside, and felt moisture. When the merchant explained that rain had dampened the grain inside, the Prophet asked why he had not placed the wet portion on top for buyers to see, declaring: "He who cheats us is not one of us" (Man ghashshana fa-laysa minna) (Sahih Muslim).

In modern banking and capital markets, Ghish includes:

  • Misrepresenting credit ratings or default probabilities in securitization prospectuses.
  • Falsifying financial statements to inflate corporate earnings.
  • Offloading toxic, subprime financing receivables to retail investors disguised as low-risk investment grade assets.

2. Tadlis (Active Concealment of Known Defects / Ayb)

Tadlis is the deliberate act of concealing a known material defect (Ayb) in the subject matter or painting a false facade to mislead the buyer into paying full market price. A classical example was Tasriyah—leaving a dairy animal unmilked for several days before sale so its swollen udder would trick buyers into believing it was an exceptional milk producer.

Under Shariah, whenever Tadlis occurs, the buyer is granted an absolute legal right called Khiyar al-Ayb (Option of Defect). Upon discovering the hidden defect, the purchaser has the legal choice to:

  • Revoke the contract, return the asset, and demand a full refund of the purchase price; or
  • Retain the asset and negotiate compensation (arsh) for the difference in value caused by the defect.

In modern corporate finance, Tadlis occurs when an issuing corporation conceals catastrophic pending environmental liabilities, unrecorded balance sheet debts, or critical intellectual property disputes during an IPO due diligence process.

3. Najsh (False Bidding, Shilling, and Artificial Price Inflation)

Najsh occurs when an individual—or a collusive group—enters bids for an asset in an auction or marketplace without any genuine intention to buy, solely to drive up the asset's price and induce legitimate prospective buyers into purchasing at an artificially inflated level. The Prophet (PBUH) explicitly commanded: "Do not engage in Najsh" (Wa la tanajashu) (Sahih al-Bukhari).

In modern capital markets, Najsh is the direct classical equivalent of:

  • Pump-and-Dump Schemes: Collaborators artificially driving up the price of a penny stock or illiquid asset through false bids and promotional hype, only to dump their holdings onto unsuspecting retail investors at the peak.
  • Wash Trading & Matched Orders: Simultaneously buying and selling the same security through affiliated accounts to generate artificial trading volume and paint a false picture of market liquidity.
  • Spoofing & Quote Layering: Entering non-bona fide buy or sell orders on electronic trading exchanges with the intention of canceling them before execution, manipulating algorithmic market depth indicators.

4. Talaqqi al-Rukban (Preempting Market Caravans / Intercepting Sellers)

Talaqqi al-Rukban refers to the practice of intercepting agricultural or merchant caravans outside the city gates before they reach the central marketplace. The urban interceptor, possessing superior knowledge of prevailing city prices, takes advantage of the rural sellers' price ignorance to purchase goods at below-market rates, then resells them in the city at full price.

The Prophet (PBUH) strictly prohibited this practice. Furthermore, jurists established that if a seller was preempted in this manner, they possessed the right of cancellation (Khiyar Talaqqi al-Rukban) upon arriving at the market and discovering the true market price.

The jurisprudential rationale centers on eliminating information asymmetry and protecting uneducated market participants. In contemporary financial markets, modern manifestations include:

  • Front-Running: A broker executing personal or proprietary trades ahead of a massive client block order after obtaining non-public order knowledge.
  • High-Frequency Arbitrage Exploitation: Intercepting orders across latency gaps to profit from price differences before retail orders reach exchanges.
  • Predatory Over-the-Counter (OTC) Pricing: Financial institutions offering deeply discounted buy-back terms on complex derivatives or illiquid bonds to unsophisticated retail or municipal clients who lack real-time market pricing screens.

5. Ihtikar (Hoarding and Cornering the Market in Essentials)

Ihtikar is defined technically as withholding and stockpiling essential commodities (particularly food, medicine, and critical supplies) from the public market during times of shortage or high demand, with the specific intent of creating artificial scarcity and driving prices to extortionate levels. The Prophet (PBUH) warned: "Whoever hoards is a sinner" (La yahtakiru illa khati') (Sahih Muslim).

Jurists clarify that Ihtikar does not apply to normal business inventory held during times of market abundance. It becomes strictly prohibited (haram) when:

  1. The hoarded goods are essential to the life and welfare of the community;
  2. The hoarding causes tangible public hardship (darar); and
  3. The hoarder seeks to manipulate market prices artificially.

In modern finance, Ihtikar corresponds to cornering the market—such as attempting to acquire dominant control over physical commodity supplies or deliverable futures contracts to engineer an artificial supply squeeze, forcing short sellers into catastrophic distress settlements.

6. Bay' al-Gharar, Mulamasah, and Munabadhah (Speculative Deceptive Sales)

In pre-Islamic Arabia, several customary sales contracts were devised to obscure defects and gamble on uncertainty:

  • Bay' al-Mulamasah: A sale concluded merely by the buyer touching a folded garment in the dark without unfolding, inspecting, or verifying its quality.
  • Bay' al-Munabadhah: A sale made binding when one party tosses a garment (or other item) to the other, regardless of what was caught or inspected. The pebble-throwing variant is Bay' al-Hasah.

The Prophet (PBUH) forbade these sales because they deliberately institutionalized excessive uncertainty (gharar fahish), eliminated the buyer's right of inspection, and transformed trade into a speculative gamble.


Risywah (Bribery & Corruption): Shariah Prohibition & Modern Governance

Corruption undermines the rule of law, misallocates public wealth, distorts fair competition, and destroys investor confidence. Shariah categorizes bribery as a heinous offense.

Prophetic Condemnation

The Prophet Muhammad (PBUH) unequivocally cursed all parties involved in corrupt transactions: "The curse of Allah is upon the one who gives a bribe (al-rashi), the one who receives it (al-murtashi), and the intermediary who facilitates it (al-ra'ish)" (Sunan Abi Dawud & Ahmad). Under Fiqh, funds acquired through Risywah represent unlawful illicit wealth (Suht or Akl amwal al-nas bi al-batil) that must be disgorged and can never be purified or legitimized.

Distinguishing Legitimate Gifts from Illicit Bribes

A critical compliance challenge in financial institutions is distinguishing between permissible gifts (Hadiyyah), customary business hospitality, and disguised bribes:

┌────────────────────────────────────────────────────────────────────────┐
│                     COMMERCIAL REMUNERATION TAXONOMY                   │
├──────────────────────────┬─────────────────────────────────────────────┤
│ Permissible Gift         │ Given out of mutual affection without any   │
│ (Hadiyyah)               │ expectation of quid pro quo official favor; │
│                          │ transparent and within nominal value.       │
├──────────────────────────┼─────────────────────────────────────────────┤
│ Official Gift / Gratuity │ Received by an executive or public official │
│ (Ghulul)                 │ due to their official position; prohibited   │
│                          │ in the hadith: "Gifts to officials are      │
│                          │ illicit betrayal (Ghulul)".                 │
├──────────────────────────┼─────────────────────────────────────────────┤
│ Facilitation Payment /   │ Any payment, lavish entertainment, or perk  │
│ Bribe (Risywah)          │ offered to influence an official duty, win  │
│                          │ a mandate, or bypass regulatory rules.      │
└──────────────────────────┴─────────────────────────────────────────────┘

Islamic financial institutions must enforce a strict Corporate Gift Policy:

  • De Minimis Thresholds: Clear caps on token promotional items (e.g., branded desk calendars, nominal festive hampers).
  • Mandatory Gift Registry: Every gift received above a nominal value must be formally logged and declared to the Compliance Department.
  • Strict Prohibitions: Cash, cash equivalents (gift cards, shares), personal loans, paid overseas vacations, and entertainment during active procurement or regulatory inspection periods are strictly forbidden.

Malaysian Statutory Framework: MACC Act 2009 Section 17A

In Malaysia, the anti-corruption mandate received statutory reinforcement through the Malaysian Anti-Corruption Commission (MACC) Act 2009 (Amendment 2018), specifically Section 17A, which came into force on June 1, 2020.

Section 17A introduces Corporate Liability for Corruption:

  • The Offense: A commercial organization (including Islamic banks, investment banks, and Takaful operators) commits a criminal offense if a person associated with the organization (employees, directors, agents, or third-party contractors) corruptly gives, agrees to give, or offers gratification to obtain or retain business or an advantage for the commercial organization.
  • Strict Personal Liability for Leaders: Once the organization is found liable, its directors, controllers, and senior management are personally deemed guilty of the same offense unless they prove that the corruption occurred without their consent or connivance and that they exercised all due diligence to prevent it.
  • Severe Penalties: A fine of not less than 10 times the value of the gratification or MYR 1,000,000, whichever is higher, or imprisonment for up to 20 years, or both.
  • The Statutory Defense (Adequate Procedures): The only legal defense available to a commercial organization is demonstrating that it had in place Adequate Procedures designed to prevent associated persons from committing corrupt acts. The Malaysian Prime Minister's Department issued guidelines based on the T.R.U.S.T. principles:
    • T – Top Level Commitment
    • R – Risk Assessment
    • U – Undertake Control Measures
    • S – Systematic Review, Monitoring and Enforcement
    • T – Training and Communication

Comparative Table: Classical vs. Modern Market Malpractices

Classical Fiqh ViolationCore Jurisprudential MechanismModern Financial Market EquivalentRegulatory Governance Framework
GhishActive adulteration and misrepresentation of quantity, quality, or risk.Fraudulent financial reporting; misleading fund prospectus; mislabeling subprime debt.Capital Markets and Services Act 2007 (CMSA); BNM Fair Treatment of Financial Consumers.
TadlisDeliberate concealment of a known latent defect (Ayb); triggers Khiyar al-Ayb.Concealing unrecorded liabilities, toxic exposures, or pending litigation during IPO/M&A.CMSA Due Diligence Guidelines; Companies Act 2016 disclosure mandates.
NajshBidding up an asset without purchase intent to induce third parties to overpay.Pump-and-dump syndicates; wash trading; matched orders; order book spoofing.CMSA Section 175 (false trading and market rigging) & Section 176 (stock market manipulation).
Talaqqi al-RukbanExploiting the geographic and price ignorance of incoming sellers before market entry.Broker front-running of institutional client orders; latency arbitrage; predatory OTC pricing.CMSA insider trading provisions; conduct rules for Malaysia's wholesale financial markets.
IhtikarHoarding essential commodities to manufacture synthetic shortages and price spikes.Cornering commodity futures markets; physical delivery squeezes; monopolistic price fixing.Competition Act 2010; Price Control and Anti-Profiteering Act 2011; Commodity Exchange Rules.
Mulamasah & MunabadhahContracting on pure physical touch or gesture to eliminate inspection and impose gharar.Blind-pool structured instruments sold without risk disclosures; unregulated binary bets.IFSA 2013 Shariah Governance Framework; Securities Commission Guidelines on Structured Products.
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Classical Market Malpractices and Modern Regulatory Equivalents
Test Your Knowledge

A securities dealer at an investment bank discovers that an institutional client has placed a massive buy order for a listed blue-chip stock. Before executing the client's order, the dealer purchases 50,000 shares for his own personal trading account to profit from the anticipated price surge. Which classical Islamic market prohibition is the modern equivalent of this unethical behavior?

A

Bay' al-Salam (Forward agricultural purchase)

B

Talaqqi al-Rukban (intercepting sellers before they learn market prices)

C

Bay' al-Sarf (Rules governing currency exchange)

D

Ihtikar (Stockpiling grain during a famine to drive up prices for later sale at a profit)

Test Your Knowledge

A syndicated syndicate of speculative traders agrees to buy and sell an illiquid Islamic exchange-traded Sukuk among themselves at progressively higher prices to create an illusion of heavy institutional demand, intending to lure external retail buyers. Under classical Fiqh al-Muamalat, what is this manipulative practice called?

A

Ihsan

B

Tawarruq

C

Najsh

D

Wadiah

Test Your Knowledge

Under Section 17A of the Malaysian Anti-Corruption Commission (MACC) Act 2009, how can an Islamic commercial bank establish a complete statutory defense if one of its corporate loan agents is found to have paid a bribe to secure a public infrastructure financing mandate?

A

By demonstrating that the total loan financing facility was structured using Shariah-compliant Murabahah contracts

B

By demonstrating that the senior loan agent acted outside normal bank operating hours

C

By offering to refund the interest portion of the financial facility back to the government ministry

D

By proving that it had 'adequate procedures' in place, following the government's TRUST principles, to prevent corruption

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