What is the ruling on buying an apartment for a meager price when it is worth many times that amount, due to the owner's harm and inability to dispose of it according to prevailing laws?

For a lease contract to be valid, the duration must be specified. Contracts that do not specify a duration must be rescinded.

If the contract is rescinded, the tenant is not permitted to remain in the leased property, because positive laws that allow this may not contradict the law of Allah.

It is not permissible for a Muslim to wrong his brother. If he relies on such laws and remains in the leased property for a low rent that the owner does not accept, or without a specified duration, then he is sinful and usurping his brother's right.

Therefore, it is not permissible to remain in the apartment except by a contract with the owner, in which the duration and the rent acceptable to the owner are specified.