But, alas! it was not wine that was in the drinking-horn, but the love-potion—the terrible magic potion—which, as it touched the hero’s lips, laid a cloud upon his memory and a fire within his heart, so that he straightway forgot Brünnhilde and loved only Gutrune, the lady of the Gibichungs.
GUTRUNE AND SIEGFRIED
As he gazed passionately upon her, she turned away, filled, perhaps, with momentary regret for what she had done, and left the hall in silence.
When she had gone, Siegfried stood looking after her for a moment, and then, arousing himself from his reverie, turned to Gunther, asking if he were married.
The Rhine Chief replied that he had never wed, because only one bride would satisfy him, and she was out of reach of even his valor; for she was surrounded by fire, and only he who could pass through the blaze could win her.
Merrily, Siegfried replied that he would go through the flame and bring the bride to Gunther if he might have in payment Gutrune for his wife.
And the two heroes went through a ceremony, very binding in those days, which was called the Oath of Brotherhood. It meant that they must remain as faithful to each other as though they were really brothers, and that should one prove false to his vow the other would have the right to kill him.
Then the two entered the boat and went away down the Rhine, Siegfried to take Gunther’s shape, with the aid of the Tarnhelm, and go through the fire to win the maiden; Gunther to wait on the banks of the Rhine until Siegfried brought him the bride, and then took his own shape once more.
Hagen, left alone in the hall, mused deeply as night drew near.