Once on a time, when the gods were constructing their abodes and had already finished Midgard and Valhalla, a certain artificer came and offered to build them a residence so well fortified that they should be perfectly safe from the incursions of the Frost giants and the giants of the mountains. But he demanded for his reward the goddess Freya, together with the sun and moon. The gods yielded to his terms, provided he would finish the whole work himself without any one’s assistance, and all within the space of one winter. But if anything remained unfinished on the first day of summer he should forfeit the recompense agreed on. On being told these terms the artificer stipulated that he should be allowed the use of his horse Svadilfari, and this by the advice of Loki was granted to him. He accordingly set to work on the first day of winter, and during the night let his horse draw stone for the building. The enormous size of the stones struck the gods with astonishment, and they saw clearly that the horse did one-half more of the toilsome work than his master. Their bargain, however, had been concluded, and confirmed by solemn oaths, for without these precautions a giant would not have thought himself safe among the gods, especially when Thor should return from an expedition he had then undertaken against the evil demons. As the winter drew to a close, the building was far advanced, and the bulwarks were sufficiently high and massive to render the place impregnable. In short, when it wanted but three days to summer, the only part that remained to be finished was the gateway. Then sat the gods on their seats of justice and entered into consultation, inquiring of one another who among them could have advised to give Freya away, or to plunge the heavens in darkness by permitting the giant to carry away the sun and the moon.