When the dream was decoded, Joseph did not stop at interpretation. He handed Pharaoh a policy. Targum Pseudo-Jonathan on Genesis 41:34, the Aramaic paraphrase of the Torah that took its final form in the Land of Israel around the seventh or eighth century CE, renders the proposal with administrative precision: "Let Pharoh make superintendents over the land, and let them take out one part in five of all the produce of the land of Mizraim in the seven years of plenty."
One in five — the first famine levy
The number matters. A fifth — twenty percent — is not confiscation; it is calibrated. Enough to survive seven lean years without crushing the farmers in seven fat ones. The Targum's word for superintendents signals that Joseph is not only forecasting weather; he is designing a civil service. Tax collectors, regional inspectors, a chain of command that reports upward to a single administrator. In later Jewish law, the model was not forgotten. The Mishnah (Peah 8:7) and Rambam's Mishneh Torah both draw on the logic that surplus years carry a civic obligation to the lean years that follow.
The takeaway
Joseph's twenty percent is the Torah's first budget. Prophecy told him what was coming; bureaucracy was how he met it.