Charles Ellicott Commentary Leviticus 13:21

"But if the priest look on it, and, behold, there be no white hairs therein, and it be not lower than the skin, but be dim; then the priest shall shut him up seven days:" — Leviticus 13:21 (ASV)

But if the priest. —In the absence, however, of these two symptoms, the patient is to be put in quarantine for one week only.