γαζοφυλάκιον
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)
[λᾰ], τό,
A treasury, OGI225.16 (Didyma, iii B. C.), LXX 4 Ki.23.11, Str.7.6.1, Ev.Luc.21.1, al.