Author: Abdulwahed Mansour
Burned M-Effort (Burned Manager Effort) is a core concept in the Sunna Protocol that implements the Islamic finance principle of Ghunm bil-Ghurm — whoever gains must also bear the risk of loss.
When a Mudaraba project results in a net loss, the manager (Mudarib) loses their accumulated effort (JHD) for that project. This effort is permanently "burned."
Burning occurs when a Mudaraba project is finalized with a net negative return:
IF project.netProfit < 0:
manager.burnedJHD += project.managerJHD
project.status = BURNED
The burn is triggered automatically by the MudarabaEngine during project settlement.
- All JHD accumulated by the manager on the specific failed project.
- Only effort on the failed project is affected — other projects remain intact.
- The burned amount is the full JHD balance for that project, not a partial amount.
- The manager is NOT financially penalized beyond effort loss.
- No tokens are slashed or confiscated.
- No reputation "penalty" is applied — the burn IS the consequence.
In classical Mudaraba contracts:
- The investor (Rabb al-Mal) provides capital and bears financial loss.
- The manager (Mudarib) provides effort and bears effort loss.
This is the principle of Ghunm bil-Ghurm: the right to profit comes with the obligation to share in loss. The Sunna Protocol enforces this digitally.
| Party | Contributes | On Profit | On Loss |
|---|---|---|---|
| Investor | Capital | Profit share | Capital loss |
| Manager | Effort | Profit share | Effort burned (JHD) |
Burning is not punitive. It is the natural, agreed-upon consequence of a failed venture. Just as the investor cannot recover lost capital from the manager, the manager cannot recover burned effort from the investor.
Burned M-Effort is recorded permanently on the SunnaLedger:
struct BurnRecord {
uint256 projectId;
address manager;
uint256 burnedJHD;
uint256 projectLoss;
uint256 timestamp;
}- Records are immutable once written.
- Any party can query a manager's burn history.
- Burn records are factored into the manager's lifetime efficiency score.
Burned M-Effort directly affects a manager's on-chain reputation:
- Lifetime Efficiency decreases because burned projects contribute zero profit but non-zero effort to the denominator.
- Burn Ratio =
Burned_JHD / Lifetime_JHD— a high ratio signals higher risk. - Investors can query these metrics before committing capital to a manager.
A manager runs two projects:
| Project | JHD | Net Profit | Status |
|---|---|---|---|
| Alpha | 200 | +$10,000 | Active |
| Beta | 150 | -$5,000 | Burned |
- Lifetime JHD: 350
- Burned JHD: 150
- Burn Ratio: 150 / 350 = 42.8%
- Lifetime Efficiency: ($10,000 × 100) / 350 = 2,857
Last updated: 2026-02-22