Sigurd now rode from Heimir's dwelling with much gold, until he came to the palace of King Giuki, whose wife was named Grimhild. They had three sons, Gunnar, Hogni, and Guthorm. Gudrun was the name of their daughter. King Giuki entreated Sigurd to stay there, and there he remained a while. All appeared low by the side of Sigurd. One evening the sorceress Grimhild rose and presented a horn to Sigurd, saying: "Joyful for us is thy presence, and we desire that all good may befall thee. Take this horn and drink." He took it and drank, and with that drink forgot both his love and his vows to Brynhild. After that, Grimhild so fascinated him that he was induced to espouse Gudrun, and all pledged their faith to Sigurd, and confirmed it by oaths. Sigurd gave Gudrun to eat of Fafnir's heart, and she became afterwards far more austere than before. Their son was named Sigmund.
Grimhild now counselled her son Gunnar to woo Brynhild, and consulted with Sigurd, in consequence of this design. Brynhild had vowed to wed that man only who should ride over the blazing fire that was laid around her hall. They found the hall and the fire burning around it. Gunnar rode Goti, and Hogni Holknir. Gunnar turns his horse towards the fire, but it shrinks back. Sigurd said: "Why dost thou shrink back, Gunnar?" Gunnar answers: "My horse will not leap this fire," and prays Sigurd to lend him Grani. "He is at thy service," said Sigurd. Gunnar now rides again towards the fire, but Grani will not go over. They then changed forms. Sigurd rides, having in his hand the sword Gram, and golden spurs on his heels. Grani runs forward to the fire when he feels the spur. There was now a great noise, as it is said:
1. The fire began to rage, and the earth to tremble, high rose the flame to heaven itself: there ventured few chiefs of people through that fire to ride, or to leap over.
2. Sigurd Grani with his word urged, the fire was quenched before the prince, the flame allayed before the glory-seeker with the bright saddle that Rok had owned.
Brynhild was sitting in a chair as Sigurd entered. She asks who he is, and he calls himself Gunnar Giuki's son. "And thou art destined to be my wife with thy father's consent. I have ridden through the flickering flame (vafrlogi) at thy requisition." She said: "I know not well how I shall answer this." Sigurd stood erect on the floor resting on the hilt of his sword. She rose embarrassed from her seat, like a swan on the waves, having a sword in her hand, a helmet on her head, and wearing a corslet. "Gunnar," said she, "speak not so to me, unless thou art the foremost of men; and then thou must slay him who has sought me, if thou hast so much trust in thyself." Sigurd said: "Remember now thy promise, that thou wouldst go with that man who should ride through the flickering flame." She acknowledged the truth of his words, stood up, and gave him a glad welcome. He tarried there three nights, and they prepared one bed. He took the sword Gram and laid it between them. She inquired why he did so. He said that it was enjoined him so to act towards his bride on their marriage, or he would receive his death. He then took from her the ring called Andvaranaut, and gave her another that had belonged to Fafnir. After this he rode away through the same fire to his companions, when Gunnar and he again changed forms, and they then rode home.
Brynhild related this in confidence to her foster-father Heimir, and said: "A king named Gunnar has ridden through the flickering flame, and is come to speak with me; but I told him that Sigurd alone might so do, to whom I gave my vow at Hindarfiall, and that he only was the man." Heimir said that what had happened must remain as it was. Brynhild said: "Our daughter Aslaug thou shalt rear up here with thee." Brynhild then went to her father, King Budli, and he with his daughter Brynhild went to King Giuki's palace. A great feasting was afterwards held, when Sigurd remembered all his oaths to Brynhild, and yet kept silence. Brynhild and Gunnar sat at the drinking and drank wine.
One day Brynhild and Gudrun went to the river Rhine, and Brynhild went farther out into the water. Gudrun asked why she did so? Brynhild answered: "Why shall I go on along with thee in this more than in anything else?" "I presume that my father was more potent than thine, and my husband has performed more valorous deeds, and ridden through the blazing fire. Thy husband was King Hialprek's thrall." Gudrun answered angrily: "Thou shouldst be wiser than to venture to vilify my husband, as it is the talk of all that no one like to him in every respect has ever come into the world; nor does it become thee to vilify him, as he was thy former husband, and slew Fafnir, and rode through the fire, whom thou thoughtest was King Gunnar; and he lay with thee, and took from thee the ring Andvaranaut, and here mayest thou recognize it." Brynhild then looking at the ring, recognized it, and turned pale as though she were dead. Brynhild was very taciturn that evening, and Gudrun asked Sigurd why Brynhild was so taciturn. He dissuaded her much from making this inquiry, and said that at all events it would soon be known.
On the morrow, when sitting in their apartment, Gudrun said: "Be cheerful, Brynhild! What is it that prevents thy mirth?" Brynhild answered: "Malice drives thee to this; for thou hast a cruel heart." "Judge not so," said Gudrun. Brynhild continued: "Ask about that only which is better for thee to know; that is more befitting women of high degree. It is good, too, for thee to be content, as all goes according to thy wishes." Gudrun said: "It is premature to glory in that: this forebodes something; but what instigates thee against us?" Brynhild answered: "Thou shalt be requited for having espoused Sigurd; for I grudge thee the possession of him." Gudrun said: "We knew not of your secret." Brynhild answered: "We have had no secret, though we have sworn oaths of fidelity; and thou knowest that I have been deceived, and I will avenge it." Gudrun said: "Thou art better married than thou deservest to be, and thy violence must be cooled." "Content should I be," said Brynhild, "didst thou not possess a more renowned husband than I." Gudrun answered: "Thou hast as renowned a husband; for it is doubtful which is the greater king." Brynhild said: "Sigurd overcame Fafnir, and that is worth more than all Gunnar's kingdom, as it is said:
"Sigurd the serpent slew, and that henceforth shall be by none forgotten, while mankind lives: but thy brother neither dared through the fire to ride, nor over it to leap."
Gudrun said: "Grani would not run through the fire under King Gunnar: but he [Gunnar] dared to ride." Brynhild said: "Let us not contend: I bear no good will to Grimhild." Gudrun said: "Blame her not; for she is towards thee as to her own daughter." Brynhild said: "She is the cause of all the evil which gnaws me. She presented to Sigurd the pernicious drink, so that he no more remembered me." Gudrun said: "Many an unjust word thou utterest, and this is a great falsehood." Brynhild said: "So enjoy Sigurd as thou hast not deceived me, and may it go with thee as I imagine." Gudrun said: "Better shall I enjoy him than thou wilt wish; and no one has said he has had too much good with me at any time." Brynhild said: "Thou sayest ill and wilt repent of it. Let us cease from angry words, and not indulge in useless prattle. Long have I borne in silence the grief that dwells in my breast: I have also felt regard for thy brother. But let us talk of other things." Gudrun said: "Your imagination looks far forward."