Early 14th century, Sefer ha-Malkhut (Casablanca, 1930), 23a

Jewish Mysticism
[The Shekhinah] is called selem on account of the fact that she is like the likeness above (ki-deyoqno shel ma‘alah) and she is called demut on account of the fact that she is comparable to the image above (she-domah le-dimyon shel ma‘alah), and this is the secret of “and through the prophets I was imaged,” i.e., to the souls which resemble the likeness above (deyoqno shel ma‘alah) the Holy One, blessed be He, is revealed in the image above (dimyon shel ma‘alah). The image is the Spirit which is the median line in the image of Tif’eret.

Translated by Elliot Wolfson in Through a Speculum that Shines- Vision and Imagination in Medieval Jewish Mysticism, Princeton- Princeton University Press, 1994.