It requires upholding the property rights of all citizens regardless of ethnicity.
“Each State Party to the present Covenant undertakes to respect and to ensure to all individuals within its territory and subject to its jurisdiction the rights recognized in the present Covenant, without distinction of any kind, such as race, color, sex, language, religion, political or other opinion, national or social origin, property, birth or other status.” (International Covenant on Civil and Political Rights)
None of the laws of belligerent occupation forbid enforcing private property rights of landlords ordered by the court.
By the same token, international law prohibits disregarding the property owners’ lawful rights due to their Jewish ethnicity.
Critics of Israel take a bigoted position by demanding that property rights should depend on ethnicity, which is exactly what Israel is being accused of.