Nibelungendlied

King Hjalprek, the father of Alf. Regin, the dwarfish brother of Fafnir, was his tutor. Regin welds together the pieces of the broken sword Gram, so sharp and strong that with it Sigurd cleaves Regin's anvil in twain. With men and ships that he has received from King Hjalprek Sigurd goes against the sons of Hunding, whom he slays, thereby avenging the death of his father. Regin has urged him to kill Fafnir and take possession of the hoard. On the Gnita Heath he digs a ditch from which, as the dragon Fafnir passes over it, he plunges the sword into his heart. The dying Fafnir warns him of the curse attached to the possession of the gold; also that Regin is to be guarded against. The latter bids him roast the heart of Fafnir. While doing so he burns his finger by dipping it in the blood to see if the heart is done, and to cool his finger puts it into his mouth. Suddenly he is able to understand the language of the birds in the wood. They warn him to beware of Regin, whom he straightway slays. The birds tell him