What is the ruling on agreeing with a relative to invest a sum of money, on condition that the amount be returned upon request and two months prior to the time of the request, with the profits being added to the principal without the owner of the money knowing the details of the work, and when the principal is requested, he states that he has stopped working and that the goods are stalled, and he demands that the owner of the money bear the loss?

If the mudarib (managing partner) refuses to sell goods that would yield a profit for both himself and the rabb al-mal (capital provider), the matter is referred to the ruler, who may compel him to sell if he deems it beneficial, although there is a difference of opinion among scholars regarding this compulsion. If the matter is not referred to the judge, the mudarib is not liable unless he has been negligent or has exceeded his authority, because his possession is that of a trustee. In the absence of proof of his negligence or transgression, the rabb al-mal bears the loss of his capital, and the mudarib loses his effort.