δεκάμνους
From LSJ
μηδενί δίκην δικάσῃς πρίν ἀμφοῖν μῦθον ἀκούσῃς → do not give your judgement on anything until you have heard a speech on both sides
English (LSJ)
μνουν, (μνᾶ)
A weighing or worth ten minae, Ar.Pax1224, 1235; δεκάμνουν, τό, weight of ten minae, IG22.1013.55; written δεκάμνων in ib. 11.203B99 (Delos, iii B.C.).