It is held that the justification occurring in the text that referring to some guaranteed elements of compensation or earnings. It means that a gain without a previous work or labour is impermissible if it is guaranteed. But if it is not guaranteed then it is permissible, like the difference between compensation that an intermediary pays to the owner, or the percentage he pays the farmer if it happens to exceed that compensation.

This statement is partially valid with regard to the explanation of the justification and for an understanding of the sphere of inquiry in other fields.