What words were whispered into the ears of Darius after the ionian revolt?

After the Ionian Revolt, it is said that the Persian king Darius received the whispered Words "Remember the Athenians" in his ear, urging him to seek revenge against Athens for its support of the Ionian rebels. This moment highlighted Darius's desire for retribution, ultimately leading to the Persian Wars and the famous Battle of Marathon. The phrase symbolizes the enduring tension between Persia and Greece, particularly Athens.