Case Study 1: Murabahah Ecosystem
Bank finances TechCo equipment purchase: (a) Agency (Wakala): Logistics firm sources equipment on bank's behalf; (b) Guarantee (Kafalah): Personal guarantor + customer guarantee; (c) Mortgage (Rahn): Equipment mortgaged; (d) Hiring (Ijarah): Account management outsourced. Each element independently compliant and serves distinct function.
Case Study 2: Investment Fund Layers
Fund appoints: (a) Investment Agent: Asset manager, fixed fee + performance incentive, fiduciary, binding contract; (b) Sub-Agent Ju'alah: Debt collector, result-based, non-binding; (c) Legal Counsel Agency: Fixed retainer. Different risk/liability per contract type.
Case Study 3: Trade Finance L/C
Exporter applies for L/C from bank: (a) Documentary Credit: Bank issues undertaking to pay upon document conformity; (b) Guarantee embedded in L/C: Bank's undertaking is guarantee; (c) Agency in L/C: Bank examines documents; (d) Service Fee (the Guarantees standard): Permissible for L/C issuance service.
Case Study 4: Agency + Guarantee Conflict
Problem: Bank appoints same employee as both Investment Agent AND Guarantor for fund performance — PROHIBITED per the Guarantees standard (conflicting roles). Solution: Separate roles — agent as fiduciary (fees, no guarantee); bank as separate guarantor (independent undertaking).
Liability Framework Across Contracts
| Contract Type | Actor | Liable For | Not Liable For |
|---|---|---|---|
| Agency (Wakala) | Agent | Negligence, breach of instructions | Market changes, force majeure |
| Investment Agency | Agent | Misconduct, negligence, breach | Market loss, profit target shortfall |
| Ju'alah | Worker | Negligence during work | Failure to achieve result (unless misconduct) |
| Hiring (Ijarah) | Employee | Negligence, breach of instruction | Force majeure, normal wear |
| Guarantee (Kafalah) | Guarantor | Debt payment upon default | Claims beyond original debt amount |
| Mortgage (Rahn) | Mortgagee | Duty to maintain, not use asset | Force majeure damage |
| Investment Manager Liability | Manager | Willful misconduct, negligence | Market losses, profit targets |
Unifying Principle
All Domain D contracts embody four Maqasid: (1) Enable commerce through delegation/intermediation; (2) Protect trust via liability rules (trustees, fiduciaries); (3) Fair risk allocation (each party bears appropriate risk); (4) Transparency (disclosure, clear terms). This allows layering contracts without losing Shari'ah integrity.