Nailed

Prometheus moulded men out of water and earth and gave them also fire, which, unknown to Zeus, he had hidden in a stalk of fennel. But when Zeus learned of it, he ordered Hephaestus to nail his body to Mount Caucasus, which is a Scythian mountain. On it Prometheus was nailed and kept bound for many years. Every day an eagle swooped on him and devoured the lobes of his liver, which grew by night. That was the penalty that Prometheus paid for the theft of fire until Hercules afterwards released him, as we shall show in dealing with Hercules.


- Apollodorus, Library, Book 1, Chapter 7, Section 1

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And passing by Arabia he slew Emathion, son of Tithonus, and journeying through Libya to the outer sea he received the goblet from the Sun. And having crossed to the opposite mainland he shot on the Caucasus the eagle, offspring of Echidna and Typhon, that was devouring the liver of Prometheus, and he released Prometheus, after choosing for himself the bond of olive, and to Zeus he presented Chiron, who, though immortal, consented to die in his stead.


- Apollodorus, Library, Book 2, Chapter 5, Section 11