attash
Amaan Duule
Here is a source mentioning Badlay ibn Sa'ad ud-Din would collect tribute from the different cities of the horn from the people of Bait Mala (in Eritrea) to the people of Mogadishu:Evidence please?
The Cambridge History of Africa
books.google.com
So this demonstrates that the rulers of Adal exercised their authority throughout all the lands inhabited by Somalis. I remember there being another thread mentioning Ahmad Gurey and the rulers of Ajuuraan being in correspondence with one another, but I can't seem to find it.