According to Ibn Khaldun, the Zubaid clan is one of the principal tribes of Madhhaj and comes from the mountainous region surrounding al-Janad - near modern-day Taiz in Yemen.
He wrote, "The lands of Madhhaj include the mountainous region near al-Janad (الجَنَد) and are inhabited by the tribes of ‘Ans, Zubaid, and Murad.
"[1] The region of al-Janad, mentioned in his text, is a historic area located near modern-day Taiz in Yemen.
It served as an important administrative and cultural hub during the pre-Islamic and early Islamic periods.
The tribe also migrated to Iraq,Saudi Arabia and other parts of the Arabian Peninsula before and after the Islamic conquest.