[Avodah] Leading Charedi Posek Says metzitza' Should Not

[Zev Sero]

BTW one proof that metzitzah is part of the mitzvah is from the halacha
regarding tzitzin she'einan me`akvin, when one does a bris on Shabbos.
During the week, of course, there is no problem with cutting these off,
so if the mohel realised while bandaging the wound that he hadn't done
a good job, he can fix it.  But on Shabbos there is an av melacha of
shechita, which is overridden by the asei of "uvayom hashmini yimol".
So the law is that during the process of the milah one may cut these
parts as well, but if the milah is over and then one noticed the problem
one may not go back and remove them until after Shabbos.  So it becomes
crucial to determine when the milah is over.  Obviously during the cutting
itself, one cuts off the entire orlah, and tries to do a perfect job,
leaving nothing that ought to be removed.  But if one noticed the error
during the peri`ah *or the metzitzah* one goes back and fixes it.  Once
the metzitzah is done the mitzvah is over; bandaging the wound is not
part of the mitzvah, and there is no longer a heter to remove the tzitzin.
However if metzitzah were only a medical practise to be done after the
mitzvah, then it would be no different from bandaging the wound, which
is also a medical practise and not part of the mitzvah; so how could one
cut the tzitzin then, once the peri`ah is over?


-- 
Zev Sero        "Natural resources are not finite in any meaningful
zev at sero.name    economic sense, mind-boggling though this assertion
                  may be. The stocks of them are not fixed but rather
		 are expanding through human ingenuity."
		                            - Julian Simon