συσχημάτισις
From LSJ
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
English (LSJ)
εως, ἡ,
A similar situation, τῶν ἀστέρων Sch.Ptol.Tetr.15, 18.
