The Naniwa-zu no uta (waka of Naniwa-zu Port) appears in the Kanajo (Japanese preface) of Kokin Wakashu (Collection of Ancient and Modern Poems) as 'the poem written on the emperor of Osazaki' composed by Wani (Wang In).
難波津の歌（なにわづのうた）は、古今和歌集の仮名序で「おほささきのみかどをそへたてまつれるうた」として紹介されている王仁の和歌。