δίκαιος εἶναι
From LSJ
καὶ κεραμεὺς κεραμεῖ κοτέει καὶ τέκτονι τέκτων, καὶ πτωχὸς πτωχῷ φθονέει καὶ ἀοιδὸς ἀοιδῷ → and potter is ill-disposed to potter, and carpenter to carpenter, and the beggar is envious of the beggar, the singer of the singer
Greek > English (Woodhouse)
be justified, have a claim to, have a right to
Spanish
ser justo que, tener derecho a, ser digno de, tener razón para