2.11
and having choked the lamb, he deposited it in a box and kept it there, and Aerope gave it to Thyestes, by whom she had been debauched. For the Mycenaeans had received an oracle which bade them choose a Pelopid for their king, and they had sent for Atreus and Thyestes. And when a discussion took place concerning the kingdom, Thyestes declared to the multitude that the kingdom ought to belong to him who owned the golden lamb, and when Atreus agreed, Thyestes produced the lamb and was made king.