Χοηφόροι
From LSJ
τὸ ἐμόν γ' ἐμοὶ λέγεις ὄναρ → you are telling me what I know already, you are telling me my own dream
Wikipedia EN
In The Libation Bearers, Libation-Bearers (Χοηφóρoι, Choēphóroi, Choephoroe, Choephori)—the second play of Aeschylus' Oresteia trilogy—many years after the murder of Agamemnon, his son Orestes returns to Argos with his cousin Pylades to exact vengeance on Clytemnestra, as an order from Apollo, for killing Agamemnon.