And Benhadad sent unto him, and said, The gods do so unto me, and more also, if the dust of Samaria shall suffice for handfuls for all the people that follow me. (1 Kings 20:10)
The words of Benhadad involve a threat of utter destruction and a boast of irresistible strength. The expression seems to mean that so numerous are the people who follow the Syrian king, there is insufficient dust in Samaria to fill the hands of the soldiers.