The South of the valley was dominated by the Balharith Tribe who were also continuously fighting one another as to who was their paramount sheik and like the Masabin also split into 2 main branches.

Moreover, social stratification in Beihan is sharp; namely, it has less notably societal elements also; such as slaves and weak people, who depend on tribal influential families for protection.

Historically, the paramount sheikh of Masabin tribe, Ahmed Saif and later his son Abdelqader, used to be the real rulers of the region and their ancestors before them.

The elimination of sheikhs Ahmed Saif and his son Abdeqader by assassination to pave the way for the implementation of the above-mentioned British policy still has tragic resonance among Masabin tribesmen.

In addition to a lesser number of Sada and Ashraf (the two latter claim they descend from Muhammad), the majority of the population, consists of non-tribal large families who have lived in Bayhan for hundreds of years.