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
προκαλέω, θωΰσσω, ἐπικαλέω, κατακαλέω, ἀνακαλέω, ἀγκαλέω, προσκαλέω, ἠπύω, ἀπύω, κικλήσκω, ἀϋτέω, ἐπιβοάω, ἐρεθίζω, ἐρεθίσδω, ἐνέπω, ἐννέπω, ἐπιρροθέω, προσαυδάω, προσέρω, κλῄζω, κέλομαι, κηρύσσω, κλάζω