[Avodah] Vayeitze "Watch Whom You Marry"

[Chana Luntz]

RDE writes:

> regarding sources of tzadikim being protected from sin. Some 
> are found in my sefer Daas Torah page 269-271

Yes but these sources only deepen my question.  Why is it that when dealing
with this issue, none of this rishonim refer to the pasuk in Mishlei as
quoted in Yevamos 121a?  That is, why is this whole discussion (and as to
whether it applies only to a tzaddik inadvertently eating forbidden foods)
discussed in the context of  the statement that even the animals of
tzaddikim won't lead a person into sin, when there seems to be this whole
other line of discussion on this topic, which involves a pasuk, noch, and
which seems to be being ignored?  Wouldn't you at least have expected a
reference to these cases and the pasuk as well in the context of this
discussion?

By the way, on checking the other uses of the pasuk in Mishlei in the
gemora, it would seem that two of them (the reference in Chullin 59a and in
Avodah Zara 39a) do relate to avoiding eating forbidden food, while the
other two, the one in Yevamos 121a that I originally found and in Nida 65a)
do not.

Kind regards

Chana