The founder of their town,
Nur Ibn Mujahid, was apparently a Somali and even long after this we have accounts of how deeply involved Somalis were with the town by the 1800s:
In those quotes you can see that their Amir's first wife was a Somali woman and the daughter of a local Bartire chieftain whose family apparently maintained this connection with the Amirs of Harar for generations and one of the Amirs top Sheikhs who handled many political matters, Sheikh Jami, as mentioned above was also a Somali of the very same tribe. The town also had a significant Somali population even though the Hararis apparently had a hilariously racist attitude toward them and the town pretty much ran on trade coming from Somali ports like Saylac iyo Berbera:
“He who commands at Berberah, holds the beard of Harar in his hand,” is a saying which I heard even within the city walls." - Richard Francis Burton
Some might not know this but there were even Hararis in the
Somali Youth League, the founding party of Somalia. Harar was also once being considered for a Somaliweyn capital by this same party. Nowadays I also hear of quite a few Hararis getting DNA tests. Some just look Habesha but a fair number I've heard of seem to have significant Somali admixture and even I myself despite being mostly from the northeast and partly from Koonfur turned up with a Harari relative on 23andme.
We have deep ties with these niggas.