But some evil tongue persuaded the gods that the Ribhus had said something derogatory of the goblet made by Tvashtar. This made Tvashtar angry, and he demanded their death. The gods then sent the fire-god Agni to the Ribhus. The Ribhus asked: "Why has the most excellent, the most youthful one come to us? On what errand does he come?" Agni told them that it was reported that they had found fault with Tvashtar's goblet; they declared that they had not said anything derogatory, but only talked about the material of which it was made. Agni meanwhile stated the resolution of the gods, to the effect that they were to make from Tvashtar's goblet four others of the same kind. If they were unable to do this, then the gods would doubtless satisfy Tvashtar's request and take their lives; but if they were able to make the goblets, then they should share with the gods the right to receive offerings. Moreover, they were to give the following proof of mastership. They were to smithy a living horse, a living chariot, a living cow, and they were to create a means of rejuvenation and demonstrate its efficacy on two aged and enfeebled beings. The Ribhus informed the gods that they would do what was demanded of them. So they made the wonderful chariot or the chariot-ship, which they gave to the Asvinians--the beautiful twin-gods--on which they ride through the air and on the sea (cp. Skidbladner, Frey's ship, and Hringhorne, Balder's, and probably also Hoder's means of locomotion through the air and on the sea). Of one horse they made two, and presented them to Indra. Out of an empty cow's hide they smithied a cow (cp. Sindre's work of art when he made the boar Slidringtanne out of an empty pig's skin). They made the remedy of rejuvenation, and tested it successfully on their aged parents. Finally, they do the great master-work of producing four goblets of equal excellence from Tvashtar's. Thereupon they appear before the gods who, "with insight," test their works. Tvashtar himself could not help being astounded when he saw the goblets. But the result of the test by the gods, and the judgment passed on the art-works of the Ribhus, were fraught with danger for the future. Both Tvashtar and the Ribhus became dissatisfied. Tvashtar abandoned the gods and betook himself to the mountains with the dises of vegetation, in whose company he is often mentioned. The Ribhus refused to accept from the gods the proffered share in morning and noon sacrifices, and went away cursing their adversaries. They proceeded on long journeys, and the gods knew not where to find them (Rigv., i. 161, 1-13; iv. 33, 1-11, &c.).