It is thought that this originated in the tradition that Okuninushi (chief god of Izumo in southern Honshu Island, Japan, and the central character in the important cycle of myths set in that region) worshipped his own Kushimitama (the wondrous, miraculous, or salubrious) and Sakimitama (the propitious) in Mt. Mimoro (Mt. Miwa.)
大国主が自らの奇魂・幸魂を三諸山（三輪山）に祀った故事に由来するとされる。