[If] chalitzah was performed on a deaf-mute, or [if] a woman who was a deaf-mute performed chalitzah, or [if] a widow performed chalitzah on a minor, her chalitzah is not valid. [If] a minor girl performed chalitzah, she must perform chalitzah when she reaches adulthood, and if she did not perform chalitzah [again], her [first] chalitzah is not valid.