Sleipnir "Þorgrímsþula": "Hrafn and Sleipnir, splendid horses [...]". In addition, Sleipnir occurs twice in kennings for "ship" (once appearing in chapter 25 in a work by the skald Refr, and "sea-Sleipnir" appearing in chapter 49 in "Húsdrápa", a work by the 10th century skald Úlfr Uggason). In "Hervarar saga ok Heiðreks", the poem "Heiðreks gátur" contains a riddle that mentions Sleipnir and Odin: In chapter 13 of "Völsunga saga", the hero Sigurðr is on his way to a wood and he meets a long-bearded old man he had never seen before. Sigurd tells the old man that he is going to
Divine twins Divine twins The divine twins are a mytheme of Proto-Indo-European religion. The Yoruba orishas Ibeji, the Maya Hero Twins, and the Haitian vodoun Marassa Jumeaux are similar examples outside the Indo-European realm. O'Brien (1982) reconstructs a horse goddess with twin offspring, pointing to Gaulish Epona, Irish Macha (the twins reflected in Macha's pair, Liath Macha and Dub Sainglend), Welsh Rhiannon, and Eddaic Freyja in the tale of the construction of the walls of Asgard, seeing a vestige of the birth of hippomorphic twins in Loki in the form of a mare (in place of Freyja) giving birth to eight-legged Sleipnir.