μετήϊσαν

From LSJ

ὀψὲ θεῶν ἀλέουσι μύλοι, ἀλέουσι δὲ λεπτά → the millstones of the gods grind late, but they grind fine | the mills of God grind slowly, but they grind exceedingly small

Source

Greek Monotonic

μετήϊσαν: Ιων. γʹ πληθ. παρατ. του μέτειμι (εἶμι, ibo).