According to the origin of Atsuta-yashiro Shrine, which is an itsubun (unknown or lost writings) in "Owari no Kuni Fudoki" (records of the culture and geography of the Owari Province), and "Atsuta daijingu Engi" (History of Atsuta-daijingu Shrine), when YAMATO Takeru no Mikoto married Miyazu-hime no Mikoto, who was a primitive ancestor of the Owari Muraji group, and stayed with her, the sword produced a divine light.
『尾張国風土記』逸文の熱田社由来および『熱田大神宮縁起』には、日本武尊が尾張連らの遠祖である宮酢媛命を娶って宿泊した時、剣が神々しく光り輝いた。