τοὐφειλόμενον

From LSJ

οὐκ ἔστι γῆρας τοῦδε τοῦ μιάσματος → that pollution never wears out, that pollution can never grow old

Source

Spanish

lo que se debe

French (Bailly abrégé)

crase p. τὸ ὀφειλόμενον.