Sleipnir When the Æsir realize that the builder is a hrimthurs, they disregard their previous oaths with the builder, and call for Thor. Thor arrives, and kills the builder by smashing the builder's skull into shards with the hammer Mjöllnir. However, Loki had "such dealings" with Svaðilfari that "somewhat later" Loki gave birth to a grey foal with eight legs; the horse Sleipnir, "the best horse among gods and men." In chapter 49, High describes the death of the god Baldr. Hermóðr agrees to ride to Hel to offer a ransom for Baldr's return, and so "then Odin's horse Sleipnir was
Hel (being) chapter 49, High describes the events surrounding the death of the god Baldr. The goddess Frigg asks who among the Æsir will earn "all her love and favour" by riding to Hel, the location, to try to find Baldr, and offer Hel herself a ransom. The god Hermóðr volunteers and sets off upon the eight-legged horse Sleipnir to Hel. Hermóðr arrives in Hel's hall, finds his brother Baldr there, and stays the night. The next morning, Hermóðr begs Hel to allow Baldr to ride home with him, and tells her about the great weeping the Æsir have done upon Baldr's