What is the jurisprudential ruling regarding the old lease contract that is set for 59 years, and does it become valid by analogy with what Azhar scholars stipulate, that the contract is valid if its term is set for 99 years or if only the first heir inherits it?

A lease contract with a known duration, agreed upon by both parties without coercion, is not terminated by the death of the lessee. Instead, it transfers to their heirs, who take their place. It is permissible for the lessor to agree with the lessee on a sum for "khalw" (key money or compensation) to terminate the contract before its term, and this has been approved by the Islamic Fiqh Academy. However, if the contract was made under state compulsion, it is an invalid and unjust contract, and the lessor has the right to terminate it.