In "Amatsunorito ko" (On Amatsu Norito Prayers), he stated that the norito was the word that Izanagi (The Male Who Invites) said when he performed misogiharae(form of Shinto purification) in Tsukushi no Himuka no Tachibana no Odo no Awakihara.
そして『天津祝詞考』にて、その祝詞はイザナギが筑紫の日向の橘の小戸の阿波岐原で禊祓をしたときに発した言葉であると唱えた。