The Great Rhetra (Greek: Μεγάλη Ῥήτρα, literally: Great “Saying” or “Proclamation”, charter) was used in two senses by the classical authors. In one sense, it was the Spartan Constitution, believed to have been formulated and established by the legendary lawgiver, Lycurgus. In the legend Lycurgus forbade any written constitution. It was therefore presumed to have been oral. In a second sense, the rhetra refers to an oracle of Delphi, which was believed to have contained the entire constitution in verse. Th

Source: Great Rhetra – Wikipedia