Leviticus 13:54

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

Read Leviticus 13:54 Using Other Translations

Then the priest shall command that they wash the thing wherein the plague is, and he shall shut it up seven days more:
then the priest shall command that they wash the thing in which is the disease, and he shall shut it up for another seven days.
the priest will order the object to be washed and then quarantined for seven more days.