Ἑβδόμειος

From LSJ

μήτε δίκην δικάσῃς πρίν ἀμφοῖν μῦθον ἀκούσῃς → do not give your judgement until you have heard a speech on both sides

Source

Spanish (DGE)

-ου, ὁ Hebdomeo, e.d., del séptimo día epít. de Apolo IG 22.4974 (IV a.C.).