Rabb-ul-mal refers to the owner of wealth or property in Islamic finance. This term is often used in the context of partnerships or investments, where one party provides capital while the other manages the business. The rabb-ul-mal is entitled to a share of the profits, while the mudarib (manager) receives a fee or a share of the profits as agreed upon. In Islamic finance, the concept of rabb-ul-mal emphasizes the importance of ethical investment and profit-sharing. It ensures that both parties have a vested interest in the success of the venture, promoting fairness and cooperation in financial transactions.