Kahlan was one of the main tribal confederations of Saba' in Ancient Yemen. They are descended from Kahlan bin Saba bin Yishjab bin Yarub bin Qahtan.

Conflict with Himyar

By the 2nd century BC Saba' was declining gradually and its southern neighbor Himyar was able to settle many nomadic tribes that were allied to Himyar and create a stronger Himyarite nation in the lowlands. Eventually Saba' was incorporated

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