Bk VII:100-158 Jason wins the Golden Fleece.
The next day's dawn dispelled the glittering stars. Then the people gathered on the sacred field of Mars and took up their position on the ridge. The king was seated in the middle, clothed in purple, and distinguished by his ivory sceptre. Behold, the bronze-footed bulls, breathing Vulcan's fire from nostrils of steel. At the touch of their heat the grass shrivels, and as stoked fires roar, or as broken limestone, that has absorbed the heat inside an earthen furnace, hisses explosively, when cool water is scattered over it, so the flames sounded, pent up in their heaving chests and burning throats. Still the son of Aeson went out to meet them.
As he came to them, the fierce creatures, with their iron-tipped horns, turned their terrible gaze towards him, pawed the dusty ground with their cloven feet, and filled the air with the steam of their bellowing. The Minyans were frozen in fear. He went up to the bulls, not feeling their fiery breath (so great is the power of magic drugs!), and stroking their hanging dewlaps, with a bold hand, yoked them together, and forced them to pull the heavy blade, and till the virgin field with the iron plough. The Colchians were stunned, but the Argonauts increased their shouting, and heightened his courage.
Then he took the dragon's teeth from the bronze helmet, and scattered them over the turned earth. The soil softened the seeds that had been steeped in virulent poison, and they sprouted, and the teeth, freshly sown, produced new bodies. As an embryo takes on human form in the mother's womb, and is fully developed there in every aspect, not emerging to the living air until it is complete, so when those shapes of men had been made in the bowels of the pregnant earth, they surged from the teeming soil, and, what is even more wonderful, clashed weapons, created with them. The Pelasgians' faces fell in fear, and their courage failed them, when they saw these warriors preparing to hurl their sharp spears, at the head of the Haemonian hero. She also, who had rendered him safe, was afraid. When she saw the solitary youth attacked by so many enemies, she grew pale, and sat there, suddenly cold and bloodless. And in case the herbs she had given him had not been potent enough, she chanted a spell to support them, and called on her secret arts.
He threw a boulder into the midst of his enemies, and this turned their attack, on him, against themselves. The earth-born brothers died at each other's hands, and fell as in civil war. The Achaeans cheered, and clung to the victor, and hugged him in eager embraces. You also, princess among the Barbarians, longed to hold the victorious man: but modesty prevented it. Still, you might have held him, but concern for your reputation stopped you from doing so. What you might fittingly do you did, rejoicing silently, giving thanks, for your incantations, and the gods who inspired them.
The final task was to put the dragon to sleep with the magic drugs. Known for its crest, its triple tongues and curved fangs, it was the dread guardian of the tree's gold. But when Jason had sprinkled it with the Lethean juice of a certain herb, and three times repeated the words that bring tranquil sleep, that calm the rough seas and turbulent rivers, sleep came to those sleepless eyes, and the heroic son of Aeson gained the Golden Fleece. Proud of his prize, and taking with him a further prize, the one who had helped him gain it, the hero, and his wife Medea, returned to the harbour at Iolchos.