«إذا بيَّنا نصيب المضارب وسكتا عن نصيب رب المال، صحت الشركة»
“If the working partner's share is stated and the capital provider's share left unstated, the partnership is valid.”
In mudarabah, the capital provider supplies funds while the mudarib manages the venture. Profit shares are fractions of the same total profit.
If the agreement assigns the worker one-third of profit, the remaining two-thirds are understood for the capital provider. That remainder is not an independently inserted obligation: it follows from the specified division of the whole.
Important limit: an allocation of profit is not, without further rules, an allocation of capital loss or a guarantee of the principal. The inference applies to the defined subject of profit sharing.