[Avodah] Tearing toilet paper on Shabbos

[Doron Beckerman]

RMB wrote:

>> Tearing toilet paper is not
normally derabbanan. AIUI, if torn on the perforations, one is tearing
to size and that's deOraisa. Rather, one must either tear kel'acheir
yad, or make sure not to tear on the lines. <<

R' Shlomo Zalman is Meikil on the Mechatech issue in this, and many other
scenarios, because he holds that one must want *that particular size* to
violate Mechatech. If the company would put the perforations a bit higher or
lower, it wouldn't make any difference to you. (In fact, I don't like where
they put it at all.)

But qorei'a is an issue, and it is qoreia Al Menas Lesaken, which is Deorysa
according to most Poskim (some say we need Koreia Al Menas Litpor Davka).

>> But I don't know about facial tissues. Is the need for one also
considered a sufficient kavod haberi'os issue? <<

I think it is if one is going to have to wipe his Ni'a on his sleeve (which
is problematic on Shabbos anyhow). If one is going to have to blow his nose
into his hand and wash it off in the sink, (which I've seen people do even
with tissues around), I'd think it is subjective. A distinguished member of
a community or a Rov can't be seen doing something like that.

 And for sure if it is going to drip out of his nose it is under kavod
Habriyos. See Rashi to Shabbos 81b that even having something visibly stuck
between your teeth is an issue of Kavod Habriyos. RSZA is lenient even on
taking medicine is such a case when the Ni'a is leaking from his nose and is
an issue of Kavod Habriyos (brought in a footnote in SSK).
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