Is it permissible for the Mudarib (agent/manager of capital) to receive a fixed monthly salary in addition to the agreed-upon percentage of the profits?

Mudarabah (definition) is a partnership contract between the capital owner and the worker. Its conditions for validity are that the capital is not guaranteed, and that the capital owner is not given a fixed amount, but rather a percentage of the profits. Scholars have unanimously agreed that it is impermissible for the worker to take a fixed amount alongside his percentage of the profit, because the capital might not generate more than what he takes. Among the conditions of Mudarabah are that the capital must be cash and known, that the profit must be known as a percentage between the two parties, and that the capital owner does not restrict the worker with specific conditions such as place, time, or goods; otherwise, the contract becomes void. It is not permissible for one party to be exclusively allocated a known amount and then for them to divide the remainder. In summary: The Mudarib worker is not allowed a monthly salary; he is only entitled to the agreed-upon percentage of the profit.