The son of Hjordis was called Sigurd. He grew up a boy of wondrous strength and beauty, with eyes that sparkled brightly, and lived at the court of 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 further of the beautiful valkyrie Brynhild, who sleeps on the fire-encircled mountain awaiting her deliverer. Then Sigurd places Fafnir's hoard upon his steed Grani, takes with him also Fafnir's helm, and rides away to Frankenland. He sees a mountain encircled by a zone of fire, makes his way into it and beholds there, as he deems it, a man in full armor asleep. When he takes off the helmet he finds that it is a woman. With his sword he cuts loose the armor. The woman wakes and asks if it be the hero Sigurd who has awakened her. In joy that it is so, Brynhild relates to him how Odin had punished her by this magic sleep for disobedience, and how that she had yet obtained from him the promise that she should be wakened only by a hero who knew no fear. She now teaches Sigurd many wise runes, and tells him of harm to fear through love of her. In spite of all, however, Sigurd does not waver, and they swear an oath of mutual faithful love.