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
parvĭ-făcĭo: facĕre parvus,
I to make light of, to despise (as one word only anteclass.): parvifaciatur, Titin. ap. Prisc. p. 789 P.