Prose Edda An illustration of Odin riding Sleipnir from an 18th-century Icelandic manuscript. Source: Internet
Gangleri (described earlier in the book as King Gylfi in disguise) asks High who the horse Sleipnir belongs to and what there is to tell about it. Source: Internet
Davidson adds that the representation of Odin's steed as eight-legged could arise naturally out of such an image, and that "this is in accordance with the picture of Sleipnir as a horse that could bear its rider to the land of the dead." Source: Internet
Hermóðr mounts Sleipnir and rides away. Source: Internet
High expresses surprise in Gangleri's lack of knowledge about Sleipnir and its origin. Source: Internet
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." Source: Internet