[Avodah] Lifnei iver

[Michael Elzufon]

RMK wrote.
"Amar Rav yehuda amar Rav: Kol mi sheyesh lo ma'os umalveh osan shelo
b'edim
oveir mishum v'lifnei iver lo sitein michsol, v'reish lakish omer gorem
klalah l'atzmo."  In this case, the gemara also refers to it as lifnei
iver,
even though there is clearly no transgression taking place except in the
unlikely circumstance that the loveh is kofeir.  This is most definitely
not
an issur of lifnei iveir.  It is at most a gezeirah/takanah.  (I have a
comment penciled in the margin of my gemara directing me to Ritva
Megilla
28a where he says that this is not an issur, but a middas chassidus.)
The
same should apply to the gemara in MK 17a which uses a similar lashon.

[[MJE]] In Moed Katan, shamta (a form of herem) is suggested for the
offender.  That does not sound like a middath hasiduth.