Apollodorus 1.9.27
Pelias
[1.9.27] Now Pelias, despairing of the return of the Argonauts, would have killed Aeson; but he requested to be allowed to take his own life, and in offering a sacrifice drank freely of the bull's blood and died. And Jason's mother cursed Pelias and hanged herself, leaving behind an infant son Promachus; but Pelias slew even the son whom she had left behind.3 On his return Jason surrendered the fleece, but though he longed to avenge his wrongs he bided his time. At that time he sailed with the chiefs to the Isthmus and dedicated the ship to Poseidon, but afterwards he exhorted Medea to devise how he could punish Pelias. So she repaired to the palace of Pelias and persuaded his daughters to make mince meat of their father and boil him, promising to make him young again by her drugs; and to win their confidence she cut up a ram and made it into a lamb by boiling it. So they believed her, made mince meat of their father and boiled him. But Acastus buried his father with the help of the inhabitants of Iolcus, and he expelled Jason and Medea from Iolcus.
