οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well
αὐλύδριον: τό, ὑποκορ. τοῦ αὐλή, μικρὰ αὐλή, Ἀποφθεγμ. Πατέρ. παρὰ Γελασ. (Coteler Eccl. Gr. mon. τ. 1 σ. 417C.)