Maseches Shabbos 136
Subject: disagreement over chalitzah

Question:
On ammud bet, it says, according to the chavrusa translation of the daf:

He (Rav Sharvaya) said to him (Ravina): Do you permit her to marry without chalitzah just because she is betrothed to a kohen? If so, may it be Hashem’s will that you permit people to eat forbidden fat!

What is the meaning of this strange "blessing", i.e. how could Rav Sharvaya say such a thing?

Maybe he is referring that he could be as great as Rav Meir who could find fourty ways to make a tameh, tahor. He was considered the greatest talmudist even if his colleagues didn't accept him.

I received the following reply from Rav Mordecai Kornfeld's Kollel Iyun Hadaf:

The Kollel replies:

The Maharsham has an interesting commentary on this Gemara, which was
apparently inspired by your question.

He explains that there is an argument in Chulin (75a) regarding the
Halachic status of the Cheilev (forbidden fat) of a miscarried animal. If
someone eats the Cheilev part of the miscarried animal, is it like eating
regular Cheilev (which is punished by Kares) or not? Rebbi Yochanan says
that the prohibition of Cheilev still applies, while Reish Lakish says it
does not. Rava in Chulin (77a) Paskens like Rebbi Yochanan.

Rav Shravya, the Maharsham explains, was commenting on Rava's newly lenient
approach in our Gemara's case of a human Neifel. Rav Shravya commented
that if Rava is prone to retract his opinion in a lenient fashion, let it
be Hashem's will that Rava will also retract his ruling that the Halachah
is like Rebbi Yochanan in Chulin (75a) and permit the "forbidden fat" of a
miscarried animal.

Kol Tuv,

Yaakov Montrose

Maybe we can suggest that according to Sanhedrin 100a That Rava said when he permitted an animal with a Treifa Shaila with original S’varas “See, I permitted a raven.”

We see that this expression of being permitting a non Kosher item is that you permit a questionable one with original S’varos. So this is his Bracha to be able to come up with proper original S’varos to permit questionable items.

Rav Chaim,
a very nice answer!