The Prose Edda 1.37

"A certain man was called Gýmir, and his wife Aurboda: she was of the stock of the Hill-Giants; their daughter was Gerdr, who was fairest of all women. It chanced one day that Freyr had gone to Hlidskjálf, and gazed over all the world; but when he looked over into the northern region, he saw on an estate a house great and fair. And toward this house went a woman; when she raised her hands and opened the door before her, brightness gleamed from her hands, both over sky and sea, and all the worlds were illumined of her. Thus his overweening pride, in having presumed to sit in that holy seat, was avenged upon him, that he went away full of sorrow. When he had come home, he spake not, he slept not, he drank not; no man dared speak to him. Then Njördr summoned to him Skírnir, Freyr's foot-page, and bade him go to Freyr and beg speech of him and ask for whose sake he was so bitter that he would not speak with men. But Skírnir said he would go, albeit unwillingly; and said that evil answers were to be expected of Freyr.

"But when he came to Freyr, straightway he asked why Freyr was so downcast, and spake not with men. Then Freyr answered and said that he had seen a fair woman; and for her sake he was so full of grief that he would not live long if he were not to obtain her. 'And now thou shalt go and woo her on my behalf and have her hither, whether her father will or no. I will reward thee well for it.' Then Skírnir answered thus: he would go on his errand, but Freyr should give him his own sword—which is so good that it fights of itself;—and Freyr did not refuse, but gave him the sword. Then Skírnir went forth and wooed the woman for him, and received her promise; and nine nights later she was to come to the place called Barrey, and then go to the bridal with Freyr. But when Skírnir told Freyr his answer, then he sang this lay:

Long is one night, long is the second; How can I wait through three? Often a month to me seemed less Than this one night of waiting.

This was to blame for Freyr's being so weaponless, when he fought with Beli, and slew him with the horn of a hart." Then said Gangleri: "'T is much to be wondered at, that such a great chief as Freyr is would give away his sword, not having another equally good. It was a great privation to him, when he fought with him called Beli; by my faith, he must have rued that gift." Then answered Hárr: "There was small matter in that, when he and Beli met; Freyr could have killed him with his hand. It shall come to pass that Freyr will think a worse thing has come upon him, when he misses his sword on that day that the Sons of Múspell go a-harrying."