James George Frazer,
The Golden Bough: A Study of Magic and Religion
“ When a Sea Dyak sorcerer or medicine-man is initiated, his fingers are supposed to be furnished with fish-hooks, with which he will thereafter clutch the human soul in the act of flying away, and restore it to the body of the sufferer. But hooks, it is plain, may be used to catch the souls of enemies as well as of friends. Acting on this principle head-hunters in Borneo hang wooden hooks beside the skulls of their slain enemies in the belief that this helps them on their forays to hook in fresh heads. ”
