Earth and water

For an episode of Adventure Time, see Earth & Water.
"Ceremony of Presenting Earth and Water."
The Spartans throw Achaemenid envoys, who had come to ask for "earth and water", into a well.

In the writings of the Ancient Greek chronicler Herodotus, the phrase earth and water (Greek: γῆ καί ὕδωρ – ge kai hydor, Persian: آب و زمین) is used to represent the demand by the Persian Empire of formal tribute from the cities or people who surrendered to them.