The Issa Musa or ‘Isa Musa (Ciise Muuse, عيسى موسى , Full Name: ’Īsa ibn Mūsa ibn Zubayr ibn Abd al-Raḥmān ibn ash-Shaykh Isḥāq ibn Aḥmad ) is a northern Somali clan. Its members form a part of the Habr Awal clan of the Isaaq clan family. The Isa Musa are divided into four major sub-clans: Mohammed Issa, Adam Issa, Abokor Issa and Idarais Issa. The Isa Musa traditionally consists of coastal people, nomadic pastoralist and merchants. This clan are primarily settled in Somaliland, including Maroodi Jeex, Togdheer, Sahil, Ethiopia, as well as Kenya. The Issa Musse have produced many prominent Somali figures with the Undersecretary General of the United Nations Abdulrahim Abby Farah, the first Somali Prime Minister & second President of Somaliland Muhammad Haji Ibrahim Egal, and the second tallest man in the world Hussein Bisad. Historically, the Isa Musa made use of the very valuable caravan trade in the Horn of Africa. Deriving income from arriving caravans into the markets of the coastal city of Berbera. The Isa Musa were able to impose a transit duty of 4 units of ana per camel loaded with merchandise.The Isa Musa, whose pasture area is the coastal plain, also raise a transit duty of 4 anas (approx. 48 pfennigs) from the caravans for the loaded dromedar and 1 ana for each sheep and each goat, which from other tribes after the Markets to be brought from Berbera.The Italian explorer and geographer Luigi Robecchi Brichetti had a similar remark in aspect of the valuable caravan trade, where he also mentioned the related Ayal Ahmad of Habr Awal - who reserved the title as the Abban of Berbera. According to the account of Bricchetti, the Isa Musa were able to attain revenue thanks to the busy caravan traffic entering & leaving the coastal and historical city of BerberaThey pass for skilled camel breeders and intelligent caravan organizers [Ayal Achmed]. And such are also the different families of the Isa Musa, who live off the caravan traffic with the Ogaden, going up to Uebi [Webi] along the Faf (Fafan) route.