μηδενί δίκην δικάσῃς πρίν ἀμφοῖν μῦθον ἀκούσῃς → do not give your judgement on anything until you have heard a speech on both sides
convĕnĭens: entis, Part. and P. a., from convenio.
convĕnĭēns,¹¹ tis, part. de convenio