What is the oldest written source in this country that mentions this right?

Yemen

There are no explicit protections of privacy in Yemen, though Article 20 does not allow for private confiscation without legal judgment (Constitute Project, “Yemen 1991: Rev. 2015”).

https://www.constituteproject.org/constitution/Yemen_2015?lang=en https://giswatch.org/en/country-report/communications-surveillance/yemen

Privacy Rights · Country sources (all rights) · Years mentioned: 1991, 2015 · Last edited 2022-12-28 · Edit on GitHub