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
subs.
Ar. and P. σκῶμμα, τό. γέλοιον, τό. Laughter: P. and V. γέλως, ὁ. Sport: P. and V. παιδιά, ἡ. Speak in joke: P. and V. παίζων εἰπεῖν. v. intrans. P. and V. σκώπτειν (Eur., Cycl. 675), Ar. and P. ἐπισκώπτειν, χαριεντίζεσθαι, P. προσπαίζειν. Sport: P. and V. παίζειν.
