Tumah and Kedusha: Contact and Effect

Tumah needs touching to effect a person; however, by kedusha even distant, non-direct contact to make an affect, like contact to a Tzadik’s Torah.

Connection between the slain and the slayer expressed in transfer of tumah through a vessel even though the slayer does not actually touch the dead person.

*כל הורג נפש לא ,ט כחב