Leviticus 13:54

he shall order that the contaminated article be washed. Then he is to isolate it for another seven days.

(New International Version)

then the priest shall order them to wash the thing in which the mark occurs and he shall quarantine it for seven more days.

(New American Standard Bible)

Then the priest shall command that they wash the thing wherein the plague is, and he shall shut it up seven days more:

(King James Version)