What is the ruling when the leased property (ayn) is usurped during the lease term?

Primary text

If the leased property is usurped, the lessee has the option to terminate the contract because their right is delayed. If termination occurs, the ruling is the same as if the contract dissolved due to the destruction of the property. If the lessee does not terminate until the lease period expires, they have the choice between two options: either terminating the contract and recovering the agreed-upon rent paid, or remaining in the contract and demanding the usufruct value (*ajr al-mithl*) from the usurper. This is because the contracted subject matter has not entirely vanished, but rather it has a substitute, which is its value, akin to the case where sold fruit is destroyed before harvesting.