Fafnir would go back to the dragon's lair and take all his treasure. Fafnir warned Sigurd that all who possessed the gold would be fated to die, but Sigurd replied that all men must one day die anyway, and it is the dream of many men to be wealthy until that dying day, so he would take the gold without fear. Regin then returned to Sigurd after Fafnir was slain. Corrupted by greed, Regin planned to kill Sigurd after Sigurd had cooked Fafnir's heart for him to eat and take all the treasure for himself. However, Sigurd, having tasted Fafnir's blood
Investigations into Germanic Mythology there is no explicit revelation in the poem Hárbardsljóð concerning the identity of the title figure, Harbard, who is concealed under this name remained disputed until the end of the 19th century. In the third volume of the same work, Rydberg's theory regarding the World Mill is discussed in relationship to the eddic poem Grottosöngr. He has also been mentioned as one of several writers who proposed analogs for Askr and Embla from comparative mythology, and who sought Indo-Iranian analogs for the Eddic Poem, Völuspá. In 2004, Swedish Doktorand (PhD student) Anna Lindén reviewed the full two-volume work on mythology,