This is the information contained in the Harla Afar manuscripts:
“Among the texts collected by the Dardortì branch, a new historical source has also been retrieved during the field mission29. It refers to the genealogy of the family and to their migration to Awsa, their territorial expansion in search of grazing and to the war arisen against the Awsa people. The text confirms that they dried the lake which in the time of their arrival occupied the region of Awsa, to farm30. The lineage from the Ḥaralla tribe is well attested in this text: the name of the tribe is given in the two variants Ḥarallā and Ḥarla that in the text are reported by a certain Yūsuf, collector of the mosque of Šayḫ Ādam which is situated at the border of Yemen, on the seaport of Moḫā. The eponymous founder of the clan, Ḥarallā, is said to have three brothers: all their children scattered between Awsa, Harar, and Berbera. Going back to the ancestors of the clan, a forefather of Ḥarallā, Dārūt, eponymous founder of the famous Somali tribe of the Darood, is said to be from Mecca in the text, and then to have moved to Zaylaʻ. His father was the well known Ismāʻīl b. Ibrāhīm al-Ǧabartī, from Zabīd, whose ancestors are believed to descend directly from the Banū Hašim and the Qurayš”.
Authors comments:
The Kabirto and the Dardortì, descendants of the Ḥarallā, seem to consider themselves ʻAfar and speak ʻAfar language, so it’s somehow surprising to see in their genealogy the presence of the ancestor of one of the major Somali clan. In the Chronicle of ʻAmdä Ṣəyon (14th century) the Ḥarlā are mentioned as an independent and sedentary population. In the Futūḥ al-Habaša, many names of Ḥarlā’s clans are still understandable in ʻAfar and the group is always distinguished from the Somali, so it is possible to suppose that their integration in the Somali lineage is later than the 16th century (date of the redaction of the Futūḥ).
Link to study: