Genesis 50:10-11

10When they came to the 1threshing floor of Atad, which is beyond the Jordan, they 2mourned there with a very great and 3sorrowful lamentation; and he 4observed seven days of mourning for his father.

11Now when the inhabitants of the land, the Canaanites, saw the mourning at 5the threshing floor of Atad, they said, “This is a 6grievous 7mourning for the Egyptians.” Therefore it was named 8Abel-mizraim, which is beyond the Jordan.