Mudarib

The managing partner or entrepreneur in a Mudarabah partnership. The mudarib contributes expertise, time, and management skill rather than capital. They are responsible for making investment decisions and managing the enterprise.

The mudarib receives their agreed share of profits as compensation. If the venture incurs losses (not due to negligence), the mudarib loses only their effort and time, not financial capital. In Islamic banking, the bank typically acts as mudarib when managing investment deposits.

The mudarib is the working partner in a Mudarabah — the entrepreneur or manager who deploys someone else's capital and earns a share of the profits it generates. The role carries a precise legal profile in fiqh (codified in AAOIFI Shariah Standard No. 13): the mudarib is a trustee (amin) over the funds, liable for losses only if caused by negligence, misconduct, or breach of the agreed mandate; is compensated exclusively by the pre-agreed profit ratio (no salary or guaranteed fee can be layered on top in the classical structure, though modern boards permit separate service contracts in some designs); and cannot commingle or exceed a restricted mandate without becoming personally liable.

Modern institutions wear the mudarib hat constantly: an Islamic bank managing profit-sharing deposit pools, a Takaful operator managing the participants' risk fund under Mudarabah models, an Islamic fund manager compensated by profit share rather than fixed fees, and Sukuk al-Mudarabah issuers. The role's practical significance for consumers is accountability analysis — if your halal investment product loses money, the first question is which capacity the provider held: as mudarib, they owe you nothing extra unless negligent; as wakil (agent), their fee was earned regardless; as guarantor of your principal, the product likely wasn't structured islamically in the first place.