Circe's warning about Helio's cattle is to not harm or kill them since they will feel the wrath of Zeus. However, when they begin starving after several days without food, that warning fails and the cows are killed leading to them to experience Zeus' wrath.
In the myth of Helios's cattle, the prophecy foretells the destruction of the cattle as a consequence of the crew's disobedience of Helios's warning not to harm them. The prophecy serves as a warning and foreshadows the tragic outcome that will occur if the crew fails to heed Helios's instructions.
Circe's final warning to Odysseus was to not slaughter Helios's cattle on Thrinacia
Eat the Cattle of Helios.
Odysseus was told not to harm Helios' cattle on the island of Thrinacia, as they were sacred to the god. Disobeying this warning would bring about severe consequences for Odysseus and his crew, as it did when they slaughtered the cattle out of hunger and faced the wrath of Helios.
Helios became angry at Odysseus' men because they ate his cattle. It was because of that slip-up that Helios had Zeus obliterate Odysseus' crew.
sacred cattle of the Greek sun god ~Helios
The cattle of Helios do not breed. The cattle are immortal, handsome, wide-browed, and curved-horned. They are directly owned by the god Helios.
The Cattle of Helios lived on the island of Thrinacia, equated with modern day Sicily.
If Helios had notice that his cattle was gone then whoever killed his cattle would be killed by Helios. This was shown in the odessey when all of the odysseuss men dies because they ate the cattle.
hyperion or Helios
They are the only cattle that can fly.
After Odysseus kills the Helios' cattle, he is not sure what to do. He realizes it was a mistake and shortly afterward they kill his crew.