"The Argonautica by Apollonius Rhodius, tr. R. C. Seaton with parallel Greek text at the Internet Sacred Text Archive"

“set out, and after searching up and down Olympus for her boy, found him far away in the fruit-laden orchard of Zeus. With him was Ganymede, whose beauty had so captivated Zeus that he took him up to heaven to live with the immortals. The two lads, who had much in common, were playing with golden knuckle-bones. Eros, the greedy boy, was standing there with a whole handful of them clutched to his breast and a happy flush mantling his cheeks. Near by sat Ganymede, hunched up, silent and disconsolate, with only two left. He threw these for what they were worth in quick succession and was furious when Eros laughed. Of course he lost them both immediately – they joined the rest. So he went off in despair with empty hands and did not notice the goddess's approach. Aphrodite came up to her boy, took his chin in her hand, and said: 'Why this triumphant smile, you rascal?'”

“The Harpies swooped down through the clouds and snatched the food from his mouth and hands with their beaks, sometimes leaving him not a morsel, sometimes a few scraps, so that he might live and be tormented.”

“And now, from somewhere in the bowels of the earth, from the smoky stronghold where they slept, the pair of bulls appeared, breathing flames of fire. The Argonauts were terrified at the sight. But Jason planting his feet apart stood to receive them... He held his shield in front of him, and the two bulls, bellowing loudly, charged and butted it with their strong horns...”