Numbers 19:13-16

¹³If you touch a dead body and don't purify yourself you make the Tabernacle of the Lord unclean and must be expelled from Israel. You are still unclean because the water of purification hasn't been sprinkled on you, and your uncleanness remains.

¹⁴The following regulation applies when a person dies in a tent. Everyone who comes into the tent and everyone who is already in the tent will be unclean for seven days.

¹⁵Any open container there that doesn't have a closed lid is unclean.

¹⁶If you're out in the open and you touch someone who has been killed by the sword or who has died naturally, or if you touch a human bone or a grave, then you'll be unclean for seven days.