Genesis 50:10-11

10When they reached the threshing floor of Atad, which is across the Jordan, they lamented and wailed loudly, and Joseph mourned for his father seven days.

11When the Canaanites of the land saw the mourning at the threshing floor of Atad, they said, “This is a solemn ceremony of mourning by the Egyptians.” Thus the place across the Jordan is called Abel-mizraim.1