Genesis 50:10-11

10When they came to the threshing floor of Atad, which is beyond the Jordan, they mourned there with a great lamentation (expressions of mourning for the deceased) and [extreme demonstrations of] sorrow [according to Egyptian custom]; and Joseph observed a seven-day mourning for his father.

11When the inhabitants of the land, the Canaanites, saw the mourning at the threshing floor of Atad, they said, “This is a grievous mourning for the Egyptians.” Therefore the place was named Abel-mizraim (mourning of Egypt); it is west of the Jordan.