This portrait was produced as the Honzon of Kichijokeka-e (reverence for devotional meetings) on the basis of the "Golden Light of the Most Victorious Kings Sutra," regarded as one of very few valuable paintings produced during the Nara period.
『金光明最勝王経』所説に基づき、吉祥悔過会（きちじょうけかえ）の本尊として制作されたもので、数少ない奈良時代の絵画遺品として貴重なものである。