Sengaku quoted the part shown as follows from the 'Kanajo' (Japanese preface) of "Kokin Wakashu" (A Collection of Ancient and Modern Japanese Poetry) in his commentary on the Manyoshu called "Manyoshu Chushaku."
仙覚の『万葉集註釈』では、『古今和歌集』の「仮名序」に、次の通り引いている。