Competition between the two brotherhoods was considerably increased when the militant Salihiya branch of the Ahmadiya Order, founded at Mecca by Sayyid Muhammad Salih(1853–1917), was introduced into Somaliland towards the end of the nineteenth century. It was to this reformist and puritanical movement that the Somali Sheikh Muhammad 'Abdille Hassan belonged, and under its banner he developed the campaign to free his country of 'infidel' dominion.

I.M. Lewis, I. M. Lewis, A Modern History of the Som…, loc. 200