Is it permissible for the landowner in a sharecropping contract to stipulate to the worker a change in the profit ratio (from one-quarter to one-fifth) if the farm is sold at the first ripening of the fruits?

It is not permissible to agree on a wage that involves ambiguity and fluctuation between two unknown percentages, because this leads to "two transactions in one," which the Prophet, peace and blessings be upon him, forbade. This applies to all contracts, such as leasing and sharecropping. Therefore, it is necessary to agree on a fixed and known percentage. Otherwise, the land belongs to its owner, and he owes the worker the prevailing wage.