The Mosaic of Reḥob (Hebrew: כתובת רחוב, romanized: k'tovet rechov, also known as the Tel Rehov inscription and the Baraita of the Boundaries, is a late 3rd–6th century CE mosaic discovered in 1973. The mosaic, written in late Mishnaic Hebrew, describes the geography and agricultural rules of the local Jews of the era. It was inlaid in the floor of the foyer or narthex of an ancient synagogue near Tel Rehov, 4.5 kilometres (2.8 mi) south of Beit She'an and about 6.5 kilometres (4.0 mi) west of the Jordan River. The mosaic contains the longest written text yet discovered in any Hebrew mosaic in Israel, and also the oldest known Talmudic text.Unlike other mosaics found in the region, the Reḥob mosaic has very little in the form of ornate design and symmetric patterns, but is unique due to its inscription. The inscription is considered by scholars to be one of the most important epigraphical findings discovered in the Holy Land in the last century. Its text sheds invaluable light on the historical geography of Palestine during the Late Roman and Byzantine periods, as well as on Jewish and non-Jewish ethnographic divisions in Palestine for the same periods.
The mosaic describes the body of Jewish law regulating the use of farm products grown in different regions. In Jewish tradition, certain laws are only applicable within the Land of Israel proper. By delineating the boundaries of the Land of Israel at the time, the mosaic seeks to establish the legal status of the country in its various parts from the time of the Jewish people's return from the Babylonian captivity. It describes whether or not local farm products acquired by Jews from various sources are exempt from the laws of Seventh Year produce, and gives guidelines for dealing with demai produce (produce whose tithing status is uncertain).
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