Halakhah su Deuteronomio 25:8

They have the yavam say, "I do not want to take her" (Deut. 25:8). And they say the word, "to take her," with a mappiq in the "he." Moreover, he must say these words in one breath.

This is the order of the Chalitsah: She reads "My brother-in-law has refused" (Devarim 25:7), and he reads "I do not desire to take her" (Devarim 25:8), and she removes [the shoe], and she spits, and she reads "so will be done to the man" (Devarim 25:9-10), but the order does not impinge [on the validity of the ceremony]. Moreover, even if she did not read or spit but only removed [the shoe], the Chalitsah is valid. When is this the case? when they are able to speak, such that they are fit to read. But if either the man or the woman is mute or the woman is a minor, they don't perform Chalitsah, and if they did, their Chalitsah is invalid. This is different than the case if the man is mentally disabled or a minor, in which case they have accomplished nothing, such that she is not invalidated to the brothers and can perform Yibum or not. Some say that this is also the rule for Chalitsah where either the man or woman is deaf that it is nothing. And some say that their Chalitsah is invalid, like with a mute man or woman.