Is it permissible for the partner in a profit-sharing partnership to stipulate a fixed salary in exchange for his effort in management?

Question:
May Allah reward you. This questioner says: In a contract of mudarabah, is it permissible for the partner to stipulate a sum of money as a fixed salary for his fees in management and work?

Answer:
No. Mudarabah is that the capital comes from one party and the work from the other, and the profit is shared between them. The profit is shared between them without specifying the amount for each, but rather it is shared, whether it is a quarter, a half, or a fifth, shared in small or large amounts.