 The other promised to give it if single-handed he would yoke with adamant the brazen-footed bulls.These were two wild bulls that he had, of enormous size, a gift of Hephaestus; they had brazen feet and puffed flames from their mouths and nostrils.These creatures Aeetes ordered him to yoke and plow, and to sow from a helmet the dragon's teeth; for he had got from Athena half of the dragon's teeth which Cadmus sowed in Thebes.