Sotah Chapter 7, Mishnah 4. The Mishnah now turns to discuss chalitzah. As we have learned, the declarations of chalitzah must be recited in Lashon HaKodesh.
"Chalitzah keitzad?" - the Mishnah's question is: what is the source that the declarations of chalitzah are made specifically in Lashon HaKodesh?
The Mishnah's derivation - a gezeirah shavah from the word 'aniyah' (answering):
"Ve'ansah ve'amrah" - in the passage of chalitzah the Torah uses an expression of answering.
"Ve'anu haLeviyim ve'amru" - and elsewhere, regarding the blessings and curses on Mount Gerizim and Mount Eival, an expression of answering is used as well.
And what was said there by the Levi'im was in Lashon HaKodesh, as we learned from the gezeirah shavah "kol, kol" from Mount Sinai - and from here, "af kan bilshon hakodesh" - here too it is in Lashon HaKodesh.
It emerges that chalitzah as well, where the Torah uses the word "ve'ansah" - an expression of answering - must be performed in Lashon HaKodesh.
The opinion of Rabbi Yehudah:
Rabbi Yehudah derives this from a different source. In the passage of chalitzah it says "ve'ansah ve'amrah kachah". According to its plain meaning, "kachah" is part of the sentence: "kachah yei'aseh la'ish asher lo yivneh es beis achiv" - so shall be done to one who does not wish to build his brother's house through yibum, but chooses to perform chalitzah instead.
But we expound the word "kachah" on its own, as though it says "like this" - "ad shetomar bilashon hazeh" - until she recites it in this language, meaning until she says precisely the wording written in the Torah, which is Lashon HaKodesh.
In summary: in this Mishnah we learn that the declarations of chalitzah must be recited in Lashon HaKodesh. The Tanna Kamma derives this through a gezeirah shavah from the expression of answering used regarding the blessings and curses by the Levi'im, which itself was said in Lashon HaKodesh (from the gezeirah shavah "kol, kol" from Mount Sinai); and Rabbi Yehudah derives it from the word "kachah" - until she recites it exactly in the wording written in the Torah.