Study Sukkah folio 23B with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
And once it dies, it contracts to be more than 3 handbreadths from the roofing, and it does not enter his mind to fix it because it is not noticeable. In that case, the principle of lavud would not apply, and the result would be a wall that is less than the minimum requisite height.
The Talmud asks: And did Abaye actually say that R' Meir is concerned about potential death with regard to the sukka walls and that R' Yehuda is not concerned? Didn’t we learn in a Mishnah: With regard to the daughter of an Israelite who married a priest and her husband went to a country overseas,
And we raised a contradiction from a different Mishnah: If one is leaving his place of residence, and in order to preclude a situation where his wife would have the status of a deserted wife he gives her a conditional bill of divorce and stipulates: This is your bill of divorce that will take effect
And Abaye said in resolving the contradiction: This is not difficult. This Mishnah, where the presumption is that one who is alive remains alive, is in accordance with the opinion of R' Meir, who is not concerned about potential death. That Mishnah, where there is concern lest one die at any point,
The Talmud cites proof that these are the opinions of those tanna’im. As it is taught in a baraita: In the case of one who purchases wine from among the Samaritans and there is reason to suspect that teruma and tithes were not taken, and he is not in a position to separate teruma, he acts as follows