What is the ruling on the landlord stipulating in the contract that the contract is considered void and the tenant is obliged to pay the full amount of the contract if the rent payment is delayed for four days, or on not accepting any excuse for terminating the contract and obliging the tenant to pay the full amount of the contract?

It is permissible for the lessor to stipulate the annulment of the lease contract if the lessee delays in paying the rent, and the lessee is only obliged to pay the rent for the period prior to the annulment. However, obliging him to pay the full agreed-upon rent for the entire period after annulment is an invalid condition. It is permissible for the lessor to stipulate that the remaining installments become due if the lessee delays in paying one of them, provided the lessee is enabled to utilize the leased property.

As for stipulating that the lease not be annulled due to an excuse, this is valid and must be fulfilled if the excuse is specific to the lessee, and the contract is not annulled in such a case. However, if the excuse is general, encompassing the destruction or damage of the leased property, then stipulating non-annulment in these cases is invalid and need not be fulfilled. The contract is annulled upon the total destruction of the property, and the lessee is not obliged to pay the remaining installments.