Mudarabah — Trust-Based Partnership | Lease & Equity Contracts

Definition

Mudarabah (مضاربة) — "trust partnership" — is contract in which: (1) One party (Rabb al-Mal) contributes capital; (2) Second party (Mudarib) contributes labor and management; (3) Profits shared per agreed ratio; (4) Losses borne ONLY by capital provider; entrepreneur loses time/effort.

Party	Contribution	Profit Share	Loss Responsibility
Rabb al-Mal (Capital Provider)	All capital; no management	As per agreement (e.g., 60%)	Bears ALL capital losses
Mudarib (Entrepreneur)	Labor, skills, management; no capital	As per agreement (e.g., 40%)	No capital loss responsibility; may lose wages

Types of Mudarabah (the Mudarabah standard)

Type	Restrictions	Use Cases
Unrestricted (Mutlaqah)	Mudarib has full freedom in capital deployment	General investment funds, portfolio management
Restricted (Muqayyadah)	Mudarib must follow specific guidelines (geographic, sectoral, operational)	Ethical funds, Shari'ah-compliant funds, specific project finance

Capital Requirements

Capital must be REAL and FUNGIBLE (cash, commodities, not real estate)
Capital must be specified in amount (no vague "adequate capital")
Capital cannot be borrowed at interest (Rabb al-Mal must own outright)
Mudarib CANNOT contribute capital to the Mudarabah (pure entrepreneur role)

Profit-Sharing Ratio

Must be specified as percentage or fraction (50:50, 60:40, 1/3:2/3)
CANNOT be guaranteed to either party
CANNOT be a fixed amount ("Mudarib gets 10,000 dinars minimum")
If no profit, pre-agreed ratio does NOT apply; loss allocation follows

Loss Allocation

Rabb al-Mal bears ALL capital losses (principal reduction)
Mudarib bears NO capital loss (does not refund invested capital)
Mudarib loses wages for effort if venture fails (opportunity cost)
Losses caused by Mudarib's negligence or breach are Mudarib's liability (separate)

Restrictions & Management Authority (the Mudarabah standard, -5)

Mudarib has FULL AUTHORITY to manage venture WITHIN THE SCOPE of Mudarabah agreement. However: (1) Rabb al-Mal may restrict Mudarib (e.g., "no borrowing," "no real estate," "only trade in textiles"); (2) Restrictions must be specified clearly in contract; (3) If Mudarib violates material restriction, Mudarib becomes liable for losses from that violation.

Termination & Accounting (the Mudarabah standard, -8)

Mudarabah may be terminated: (1) By mutual agreement at any time; (2) By unilateral notice from Rabb al-Mal if Mudarib violates terms; (3) By death or incapacity of either party (automatic); (4) Upon achieving stated venture objective (if temporary).

Upon termination, Mudarib must LIQUIDATE capital and settle accounts. Profits calculated and divided per agreed ratio. Rabb al-Mal's capital (or what remains) returned.

Framework Agreements and Successive Mudarabahs

A capital provider and an entrepreneur may sign a memorandum of understanding (general framework) covering a defined sum and a defined duration, under which successive or revolving Mudarabah transactions will later be executed. The framework should specify whether the contemplated Mudarabahs will be unrestricted or restricted, fix the profit-sharing ratio, and identify the guarantees the Mudarib will provide against negligence, misconduct, or breach. Once an actual Mudarabah is concluded under the framework, its terms become integral to that contract unless the parties agree to opt out of specific obligations.

Tangible assets as capital — capital is in principle paid in cash, but tangible assets may be contributed at their valuation (by experts or by agreement), with that valuation forming the Mudarib's capital base. The Maliki and Hanbali traditions support this; the Hanafi position is more restrictive.
Cannot be a debt — a debt owed by the Mudarib (or by a third party) to the capital provider cannot serve as Mudarabah capital. The doctrinal worry is twofold: a receivable is not available for immediate use, and treating a debt as Mudarabah capital invites suspicion that the creditor extended the loan tenure to extract a return under the Mudarabah label.
Free access to the capital — for the contract to be valid, the capital must be wholly or partially placed at the Mudarib's disposal, or the Mudarib must enjoy free access to it. Without this, the Mudarib cannot operate as the trustee-investor the contract envisages.
Capital must be quantified — the amount must be clearly known in quality and quantity at contract inception. Recovery of capital at liquidation is the trigger for any profit distribution; if capital is not knowable, recovery cannot be ascertained and disputes follow.

Ratio mechanics, not lump sums

Profit must be a percentage share of realised profit, not a lump sum or a percentage of capital. Either form would allow one party to take a guaranteed amount that may exceed total realised profit, defeating the partnership-in-profit essence. Hurdle-rate triggers (e.g., the Mudarib takes a higher share above a stated profit ceiling) are permitted because they remain percentages of profit; they do not deprive any party of profit if the hurdle is not met.

Cannot combine fee and profit share

A Mudarib taking both a profit share and a management fee inside the same Mudarabah contract is impermissible — the fee is a lump sum that may consume the whole profit, eliminating the sharing essence. The parties may, however, sign a separate, independent agreement engaging the Mudarib (for a fee) to perform a service that is not by custom part of Mudarabah operations. The independence is doctrinally critical: termination of the service contract must not affect the Mudarabah.

Capital recovery before profit

No profit is recognised or distributed until the capital is recovered or maintained intact. Losses incurred in earlier operations are brought forward and set against future profits. Distribution before liquidation is treated as on-account and is revised when actual or constructive valuation is performed.

Constructive valuation

At interim points during the Mudarabah, the assets may be valued at fair value (constructive valuation) rather than waiting for actual sale (actual valuation). This permits orderly periodic profit distribution. Receivables are measured at cash-equivalent or net realisable value; neither time-value adjustments nor present-value discounts may be brought in.

Commingled Mudarib funds

If the Mudarib mixes his own capital with the Mudarabah funds, he becomes a partner for his own contribution and a Mudarib for the capital provider's contribution. Profit is split proportionately to the two pools first; the Mudarib's share of the partnership profit is his outright, and the remainder follows the Mudarabah ratio. This is a typical pattern in Islamic banks that mix shareholder funds with investment-account funds.

Default ratio, void contract

If the contract is silent on the profit ratio and no commercial custom resolves it, the Mudarabah is void ab initio. The Mudarib then receives the common market price for the kind and amount of work he performed, treated as a hire rather than a partnership.

Mudarib Powers and Duties

In an unrestricted Mudarabah the Mudarib may do what entrepreneurs in his field customarily do: pursue feasible investments suited to his expertise, hire workers for tasks not customarily his own, sell or buy on deferred-payment terms, and combine the Mudarabah with a partnership (Sharikah) — including the typical case of commingling unrestricted investment-account deposits with the institution's own funds. He may also accept new Mudarabah capital from a third party provided the new contract does not impair his responsibilities under the first.

Three things the Mudarib may not do without the capital provider's explicit consent: make a loan from the Mudarabah funds, give a gift, or make a charitable donation. Likewise he may not waive a right associated with the Mudarabah operation. He may, however, take customary living and travel expenses from the Mudarabah funds — by explicit approval, or by reasonable custom where the contract is silent.

Liquidation — Five Grounds

Unilateral termination by either party (because the contract is non-binding before work commences).
Mutual agreement to liquidate.
Arrival of the maturity date, where the parties agreed a fixed term at inception.
Exhaustion of the Mudarabah funds, or accumulated losses extinguishing the capital.
Death of the Mudarib (or liquidation of the institution acting as Mudarib) — the contract being analogous to agency, which terminates on the agent's death.

Mudarabah in Islamic Banking

Investment Accounts: Customer (Rabb al-Mal) deposits capital; bank (Mudarib) invests; profits split
Business Finance: Bank funds entrepreneur's business; entrepreneur manages; profits shared
Fund Management: Assets under management operate on Mudarabah basis