משנה על קידושין 1:1

[The land of Israel is divided into] three territories with regard to the sabbatical law.[Any produce grown in land] that was occupied by those who came up from Babylon, namely from Eretz Israel as far as Chezib, may not be eaten, nor [may its soil] be cultivated. [Any produce grown in land] that was occupied by those who came up from Egypt, namely from Chezib to the river, and until Amonah, may be eaten, but [its soil] may not be cultivated. From the river till Amonah and inwards, [produce] may be eaten and [the soil] cultivated.