Book of Jubilees 8:10–12

¹⁰ And it came to pass in the beginning of the thirty-third jubilee [1569 A.M.] that they divided the earth into three parts, for Shem and Ham and Japheth, according to the inheritance of each, in the first year in the first week, when one of us who had been sent, was with them. (JUB) ¹¹ And he called his sons, and they drew nigh to him, they and their children, and he divided the earth into the lots, which his three sons were to take in possession, and they reached forth their hands, and took the writing out of the bosom of Noah, their father. (JUB) ^12a And there came forth on the writing as Shem's lot the middle of the earth which he should take as an inheritance for himself and for his sons for the generations of eternity, from the middle of the mountain range of Rafa, from the mouth of the water from the river Tina, and his portion goes towards the west through the midst of this river, and it extends till it reaches the water of the abysses, out of which this river goes forth and pours its waters into the sea Me'at, and this river flows into the great sea. (JUB) ^12b And all that is towards the north is Japheth's, and all that is towards the south belongs to Shem. (JUB)