ὁμαλόω

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

Source

German (Pape)

[Seite 329] = ὁμαλίζω (?).

Greek (Liddell-Scott)

ὁμᾰλόω: ὁμαλίζω, Γλωσσ.