However, there is no description of 'sakaotoshi' which indicates Yoshitsune having ran down a cliff or a hill then executing a surprise attack on the Ichinotani military camp of the Taira clan in "Gyokuyo," the first class historical material of that period.
しかしながら、義経が崖ないし坂を駆け下って平氏の一ノ谷の陣営奇襲したという「逆落し」自体は当時の一級史料である『玉葉』には記されていない。