Sleipnir is Sleipnir, he is Odin's, he has eight legs." In chapter 41, High quotes the "Grímnismál" stanza that mentions Sleipnir. In chapter 42, Sleipnir's origins are described. 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. High expresses surprise in Gangleri's lack of knowledge about Sleipnir and its origin. High tells a story set "right at the beginning of the gods' settlement, when the gods established Midgard and built Val-Hall" about an unnamed builder who has offered to build a fortification for
Sleipnir mentioned in a riddle found in the 13th century legendary saga "Hervarar saga ok Heiðreks", in the 13th-century legendary saga "Völsunga saga" as the ancestor of the horse Grani, and book I of "Gesta Danorum", written in the 12th century by Saxo Grammaticus, contains an episode considered by many scholars to involve Sleipnir. Sleipnir is generally accepted as depicted on two 8th century Gotlandic image stones: the Tjängvide image stone and the Ardre VIII image stone. Scholarly theories have been proposed regarding Sleipnir's potential connection to shamanic practices among the Norse pagans. In modern times, Sleipnir appears in Icelandic folklore