οὐκ ἂν λάβοις παρὰ τοῦ μὴ ἔχοντος → you can't take from one who doesn't have, you can't squeeze blood out of a turnip, you can't get blood out of a turnip, you can't get blood from a stone, you can't get blood out of a stone
η
μεγάλο κουδούνι.
[ΕΤΥΜΟΛ. < κουδούνι + μεγεθ. κατάλ. -α (πρβλ. κασόν-α, κεφάλ-α)].