TT #749 · Parashas Ki Seitzei · Seventh Aliyah · Passuk 25:09
Then his yevamah shall approach him in the presence of the elders, and draw his shoe off his foot, and spit in his face, and respond and say: “Thus shall be done to the man who will not build up his brother’s house.”
Torah Temimah points to Yevamot 104b.
TT lemma: וְאָמְרָה.
מְלַמֵּד שֶׁהָאִלֶּמֶת שֶׁחָלְצָה חֲלִיצָתָהּ פְּסוּלָה, לְפִי שֶׁאֵינָהּ בְּוַאֲמָרָה.
English: This teaches that a mute woman who performed chalitzah — her chalitzah is invalid, because she is not capable of “and she shall say.”
On the daf / in context: The verbal declaration is essential; a woman who cannot speak cannot fulfill it.
Derash invalidating chalitzah by a mute woman.
A mute yevamah cannot perform a valid chalitzah.