Hajji Baba Chapter X: He Makes a Soliloquy and Becomes an itinerant Vendor of Smoke
My tobacco was of various sorts -- Tabas, Shiraz, Susa, and Damascus. It is true that I was not very scrupulous about giving it pure; for with a very small quantity of the genuine leaf I managed to make a large store, with the assistance of different sorts of dungs. I had a great tact in discovering amongst my customers the real connoisseur, and to him I gave it almost genuine. My whole profits, in fact, depended upon my discrimination of characters.