Now when 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 it was named Abel-mizraim, which is beyond the Jordan.
(New American Standard Bible)
And when the inhabitants of the land, the Canaanites, saw the mourning in the floor of Atad, they said, This is a grievous mourning to the Egyptians: wherefore the name of it was called Abelmizraim, which is beyond Jordan.
(King James Version)