Numbers 19:15 in the World English Bible
Every open vessel, which has no covering bound on it, is unclean.
Context
14 This 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.
15 And every open vessel, which hath no covering bound upon it, is unclean.
16 And 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.