Question

Hello, honored Rabbi,
I would like to know how the Rabbi understands the logical rule (or hermeneutical principle by which the Torah is interpreted), “If you grab too much, you grab nothing.”
I have come up with several possibilities / understandings of the rule, but I still cannot find a logical explanation for the use of this rule in Arakhin 4a, since there there is an upper limit, and also in a case of doubt we would rule stringently (see Tosafot on Yoma 80b, s.v. “Na’avid”), and in addition this is not a derivation from a verse.
How does the Rabbi understand the Sifra (Zavim, section 5, halakhah 5)? Do Rabbi Yehuda ben Beteira and Rabbi Nehemiah disagree with Rabbi Akiva, or are they giving a reason / interpreting him, and what is each of their respective positions?
In addition, I would be happy if the Rabbi could explain Rashi’s approach and what he means when he says, “and it is only a parable” (Sukkah 5a).
Thank you very much,
Or