The gods declare that Loki would deserve a horrible death if he could not find a scheme that would cause the builder to forfeit his payment, and threatened to attack him. Loki, afraid, swore oaths that he would devise a scheme to cause the builder to forfeit the payment, whatever it would cost himself. That night, the builder drove out to fetch stone with his stallion Svaðilfari, and out from a wood ran a mare. The mare neighed at Svaðilfari, and "realizing what kind of horse it was," Svaðilfari became frantic, neighed, tore apart his tackle, and ran towards the mare. The mare ran to the wood, Svaðilfari followed, and the builder chased after. The two horses ran around all night, causing the building work to be held up for the night, and the previous momentum of building work that the builder had been able to maintain was not continued.