Sleipnir about the god Baldr's bad dreams, Odin places a saddle on Sleipnir and the two ride to the location of Hel. The "Völuspá hin skamma" section of "Hyndluljóð" says that Loki produced "the wolf" with Angrboða, produced Sleipnir with Svaðilfari, and thirdly "one monster that was thought the most baleful, who was descended from Býleistr's brother." In the "Prose Edda" book "Gylfaginning", Sleipnir is first mentioned in chapter 15 where the enthroned figure of High says that every day the Æsir ride across the bridge Bifröst, and provides a list of the Æsir's horses. The list begins with Sleipnir: "best
Freyja of red gold. High notes that Freyja has many names, and explains that this is because Freyja adopted them when looking for Óðr and traveling "among strange peoples". These names include "Gefn", "Hörn", "Mardöll", "Sýr", and "Vanadís". Freyja plays a part in the events leading to the birth of Sleipnir, the eight-legged horse. In chapter 42, High recounts that, soon after the gods built the hall Valhalla, a builder (unnamed) came to them and offered to build for them in three seasons a fortification so solid that no jötunn would be able to come in over from Midgard. In exchange,