Leviticus 13:31

And if the priest looks on the disease of the scaly eruption, and, behold, it is not in sight deeper than the skin, and that there is no black hair in it; then the priest shall shut him up that has the disease of the scaly eruption seven days:

Treasury of Scripture Knowledge

Summary

And if the priest look on the plague of the scall, and, behold, it be not in sight deeper than the skin, and that there is no black hair in it; then the priest shall shut up him that hath the plague of the scall seven days:

Seven days

Bible References

Seven days

Leviticus 13:4
If the bright spot is white in the skin of his flesh, and in sight is not deeper than the skin, and the hair thereof is not turned white; then the priest shall shut him up that has the disease seven days: