Numbers 19:11-16

11He that toucheth the dead body of any man shall be unclean seven days.1 12He shall purify himself with it on the third day, and on the seventh day he shall be clean: but if he shall not purify himself the third day, then the seventh day he shall not be clean. 13Whoever 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 whoever 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.