And whoever in the open field touches one who is slain with a sword, or a dead body, or a bone of a man, or a grave, shall be unclean seven days.
Torah Temimah: Nazir 53b — “Slain” — this is a limb from a living person that still has the potential to heal; “sword” — it is like a corpse.
English: “Slain” — this is a limb from a living person that still has the potential to heal; “sword” — it is like a corpse.
Definition of “chalal” and the status of a sword that killed.
A limb severed from a living person that retains healing potential, and a sword that has killed, both convey corpse impurity.