Leviticus 13:31
But when the priest examines the scales of the skin rash and it doesn't appear more extensive than skin deep and there's no black hair in it, then the priest is to isolate him 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 light spot in the skin of his body is white but the appearance of the skin rash isn't deeper than the skin of his body and its hair has not become white, then the priest is to isolate the one who is infected for seven days.