Etiquette in the Middle East
Many matters of etiquette in the Middle East are connected to Islam as it is written in the Qur'an and how it has been traditionally understood and practiced throughout the centuries. Prescribed Islamic etiquette is referred to as Adab, and described as "refinement, good manners, morals, ethics, decorum, decency, humaneness and righteousness".
Source: Wikipedia — Etiquette in the Middle East (CC BY-SA 4.0)