E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Business To-morrow.
When the Spartans seized upon Thebes, they placed Arc’hias over the garrison. Pelop’idas, with eleven others, banded together to put Archias to the sword. A letter containing full details of the plot was given to the Spartan polemarch at the banquet table; but Archias thrust the letter under his cushion, saying, “Business tomorrow.” But long ere that sun arose he was numbered with the dead.
