In Greek mythology, which bull did Minos fail to sacrifice before the Minotaur was born?

In Greek mythology, Minos failed to sacrifice the Cretan Bull before the Minotaur was born.

Poseidon sent the magnificent bull from the sea so that Minos could demonstrate divine approval of his rule. Minos was supposed to sacrifice it, but he kept the animal instead because of its exceptional beauty. Poseidon punished this refusal by causing Pasiphae, Minos’s wife, to desire the bull.

Their union produced the Minotaur, a creature with a bull’s head and a human body. Minos then ordered Daedalus to build the Labyrinth as a place of confinement. The bull itself later became the subject of another heroic labor.

Heracles was ordered to capture the Cretan Bull as one of his labors. After Heracles brought it to the Greek mainland, the animal was eventually associated with the Marathonian Bull, which Theseus captured or killed in later tradition. The two bulls are therefore related in the mythic sequence but are not always presented as exactly the same episode.