Leviticus 13:31
If the priest examines you and finds the sore does not appear to be deeper than the surrounding skin, but there are still no healthy hairs in it, he will isolate you for 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 sore is white and does not appear to be deeper than the skin around it and the hairs have not turned white, the priest will isolate you for seven days.