[Avodah] non kosher phone

[Zev Sero]

On 31/07/2013 4:47 PM, Micha Berger wrote:
> But more generally... Is there an issue of lifnei iveir when the other
> party holds something is mutar, but can't do it without your help?
> Lifnei iveir poses some interesting paradoxes for eilu va'eilu. Can
> someone who only holds lehalakhah that one may only consume literal
> chalav yisrael provide for other Jews chalav hacompanies? Can a Sepharadi
> sell me non-bet Yosef meat?

Lich'ora not.  The issue usually comes up the other way around.   Can an
Ashkenazi sell non-glatt meat to a Sefardi, or can a Sefardi sell kitniyot
and matza ashira to an Ashkenazi.   Bet Shammai, who held that their own
children were perfectly kosher, and that was Bet Hillel were wrong to call
them mamzerim, nevertheless did not trick Bet Hillel into marrying them.
They respected BH's opinion, and informed them when a proposed shidduch was
assur according to BH's shita.   And BH *trusted* them to so inform them.
But what you're asking is the opposite: what if a BH family had a child that
they held was a mamzer, but they knew that BS would consider the child kosher.
Could they in good conscience propose the shidduch (with full disclosure)?

-- 
Zev Sero               A citizen may not be required to offer a 'good and
zev at sero.name          substantial reason' why he should be permitted to
                        exercise his rights. The right's existence is all
                        the reason he needs.
                            - Judge Benson E. Legg, Woollard v. Sheridan