Giklo,
A better example for Sahal, would be the Hawadle and Dir conflict that resulted in very sharp clashes in an areq between two locations known as Kabxanlay and Deefoow.
Secondly, you are asking the question "who is at fault" when you literally said, I will quote you;
The land belongs to Hassan Ugaas and nobody is denying that.
The fault did not began with Hassan Ugaas.
This is the thing about Justice, you need to be aware of your Injustice (generally).
Really the role played by Majerten is similar to the role played by Ogadeen against Marehan in centeal regions.
By that I mean, because of historical "border" conflict (Somalia vs Ethiopia for Marehan and Somaliland vs Somalia for Dhulbahante) both groups faced antagonists who relied on multiple pressures against the two to take advantage of for benefit in a long historical conflict about resource.
So Marehan is facing "Hawiye" groups (particularly Rer Hobyo and Rer Cadaado and Rer Guriceel) and Dhulbahante is facing "Isaaq" groups (Rer Baligubadle and Rer Caynaba and Rer Danood)---with strong, historical conflict of resources predating even the international boundaries and national politics that was being used by the "reero" sometimes even inspite of let alone sanctioned by say the national authority in Hargeisa or Mogadishu...
...and Ogaden and Majerteen come randomly, given the extenuating conflict about resources and land ownership I am currently involved in with heridatary foes who are even directly taking advantage of and being bouyed by the overall national boundary issue as a force multiplication----
And Ogaden instituting a land dispute at that same moment to come and build equity around Fadhigaraadle and Majerten does the same against Dhulbahange to institite at that same moment the start of a land dispute in Boocame.
Walaal, the fact of what you understand when you said "Hassan Ugaas owns the land" clearly recognizing they are not aggressor but offense.-
---in the middle of Dhulbahante in a war of equity with hereditary foes targeting him with conflict for that exact reason "land ownership" is so unforgivable and intensely even more detestable I can tell you personally as Marehan, I never saw Marehan lips so curled against the hereditary foes as I saw their lips furled against Makaahiil and Ogaden.
Colaada between I andy hereditary foes is one where we mutually and freely have identified each other as "belligerants" or party to an existing conflict.
But what OG just did is unforgivable.
So Marehan didn't win the clashes and go home as was done against the hereditary foces, because against Caleen, they sure to win the clash, then intentionally as further punishment seized livestokach even past the point of topic, and then even started hit and run going behind Caleen line and destroying berkedo in their own territory.
Because after all, "kuwaan dagaal cad baa naga dhaxeeye", what level of backstap is this from I placed my unprotected back?
I do not support any proliferation of conflict at all and all the innocents were God's children, but the tone of your address or even how you present is capable of animating extreme response from Dhullo.
Use the context walaal, no contents without context should sver be utilized OR THE BEST