This is regarded as the supreme secret ceremony of the Shingon sect, and religious articles (法具) such as a rosary, five-pronged pestles, a stole and others, which are used in ascetic training, were brought by Kukai (Kobo-daishi) from Tang (China).
真言宗最高の秘儀とされ、修法で使用する念珠・五鈷杵（ごこしょ）・袈裟などは、空海（弘法大師）が唐（中国）より持ち帰った法具である。