The World Federation Islamic Laws

Ruling 2192

If a person rents something other than a house, shop, or ship – for example, he rents some land – and the owner does not stipulate a condition that only he must use it, then, if he gives it on rent for an amount that is higher than what he has rented it for, the validity of the rental agreement is problematic (maḥall al‑ishkāl) [i.e. based on obligatory precaution, it is not valid].4
4 As mentioned in Ruling 6, the term ‘problematic’ (maḥall al‑ishkāl) amounts to saying that the ruling is based on obligatory precaution.