[Avodah] Mourning an Abusive Parent

[Rabbi Meir G. Rabi via Avodah]

On 7 Sep 2016 8:51 PM, "Micha Berger" <micha at aishdas.org> wrote:
> I argued that while it could well be chanifah, that might not matter.
>
> Kibud av va'eim is only partly about the parent. To a large extent the
> parent is a "cheftza shel mitzvah", representing how we would treat G-d if
> He visibly walked among us...

Is there any Halacha founded upon the Derasha - HKBH is a parent, 3 Shutfim
in a person?

I'm pretty suspicious of employing a Derasha (HKBH is a parent, 3 Shutfim
in a person) LeTaAma Dekra, to modify the application of the Issur of
Chanufa.

AFAIK it's a Derasha not brought in Midrash, nor mentioned by the Rishonim.