[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.

[If] she performed chalitzah before two [judges], or before three, but it was discovered that one was a relative or was disqualified, her chalitzah is not valid; [but] R' Shimon and R' Yochanan the Sandler validate [it]. It once happened that someone performed chalitzah when only he and she were present, in a prison, and the case came before R' Akiva, and he validated [it].