The Legend of Sigurd and Gudrún claims that he desires only to avenge his father. The gold and the glory, he adds, are for Sigurd to keep. Twice Regin attempts to forge a sword for Sigurd, only to see the latter effortlessly break them. At last, Sigurd goes to his mother Sigrlinn and requests the broken pieces of Grímnir. Regin takes these and forges the sword Gram. Although Sigurd wishes to slay Fafnir then and there, Regin tells him he must have a horse. In response, Sigurd buys the horse Grani, who was sired by Odin's eight-legged steed Sleipnir, and goes forth to kill Fafnir. Later,
Horse worship a horse, Arion, which was capable of human speech. This bears some resemblance to the Norse mythology reference to the gender-changing Loki having turned himself into a mare and given birth to Sleipnir, "the greatest of all horses". Tacitus (Germania) mentions the use of white horses for divination by the Germanic tribes: In Gallo-Roman times, the worship of Epona was widespread in the north-western portions of the Roman Empire. The Welsh legend of Rhiannon and the Irish legend of Macha, although first recorded in Christian times, may indicate memories of horse worship. The white horse of Rhiannon is another example