The Prose Edda 2.26

"How should one periphrase the sun? By calling her Daughter of Mundilfari, Sister of the Moon, Wife of Glenr, Fire of Heaven and of the Air. Even as Skúli Thorsteinsson sang:

Glenr's god-blithe Bed-Mate wadeth Into the Goddess's mansion With rays; then the good light cometh Of gray-sarked Máni downward.

Thus sang Einarr Skúlason:

Whereso the lofty flickering Flame of the World's Hall swimmeth O'er our loved friend, who hateth And lavisheth the sea-gold.