Charles Ellicott Commentary Joshua 11:6

"And Jehovah said unto Joshua, Be not afraid because of them; for to-morrow at this time will I deliver them up all slain before Israel: thou shalt hock their horses, and burn their chariots with fire." — Joshua 11:6 (ASV)

You shall hough their horses. —See Note on Joshua 11:9, and observe that the command of Jehovah is the authority for the act.