Numbers 19:13-16

¹³Whosoever toucheth the dead body of any man that is dead, and purifieth not himself, defileth the tabernacle of the LORD; and that soul shall be cut off from Israel: because the water of separation was not sprinkled upon him, he shall be unclean; his uncleanness is yet upon him.

¹⁴This is the law, when a man dieth in a tent: all that come into the tent, and all that is in the tent, shall be unclean seven days.

¹⁵And every open vessel, which hath no covering bound upon it, is unclean.

¹⁶And whosoever toucheth one that is slain with a sword in the open fields, or a dead body, or a bone of a man, or a grave, shall be unclean seven days.