He shall be shaven
His head or beard, where the scall was, as Aben Ezra; and so Ben
Gersom, who adds, the law is not solicitous whether this shaving
is by a priest or not; so it seems any one might shave him:
but the scall shall he not shave;
that is, the hair that is in it, but that was to continue and
grow, that the colour of it might be easily discerned at the end
of seven other days; according to the Targums of Onkelos and
Jonathan, he was to shave round about it, but not that itself;
Jarchi says, he was to leave two hairs near it F21, that
he might know whether it spread; for if it spread it would go
over the hairs, and into the part that was shaven; when it would
be a clear case it was a spreading leprosy: now, that there might
be an opportunity of observing this, whether it would or not, the
following method was to be taken: and the priest shall shut
up [him that hath] the scall seven days
more;
by which time it would be seen whether there was any increase or
decrease, or whether at a stand, and of what colour the hair was,
by which judgment might be made of the case.
F21 Misn. Negaim, c. 10. sect. 5.