Jehoiachin's Rations Tablets
Jehoiachin's rations tablets date from the 6th century BC and describe the oil rations set aside for a royal captive identified with Jeconiah, king of Judah. Tablets from the royal archives of Nebuchadnezzar II, emperor of the Neo-Babylonian Empire, were unearthed in the ruins of Babylon that contain food rations paid to captives and craftsmen who lived in and around the city.
Source: Wikipedia — Jehoiachin's Rations Tablets (CC BY-SA 4.0)