The commandment is for the eldest to perform yibum. [If] he was unwilling [to do so], we approach all the [other] brothers; [if] they were unwilling, we return to the eldest and say to him: “The mitzvah is [incumbent] upon you —- perform either chalitzah or yibum!”

[If] he deferred to a minor until he becomes of age, or to the eldest until he arrives from overseas, or to a deaf-mute or to an idiot, we do not listen to him; but we say to him: “The mitzvah is [incumbent] upon you —- perform either chalitzah or yibum!”