Metamorphoses Book 13: The Fall of Troy
The oracle said that Troy would fall only when the statue of Athene had been removed and when Hydra's arrows rained down on the city. Ulysses retrieved the statues and went back to the island where he'd left Philoctetes, the keeper of the arrows. Once these things were done, Troy fell and the men were all killed. The Greeks burned the city, and captured the women to take back to Greece as slaves. Hecuba, wife of Priam and mother of Hector and Paris, was among the slaves.