Sukkah 22A

מתני׳ סוכה המדובללת ושצילתה מרובה מחמתה ⁠— כשרה. המעובה כמין בית, אף על פי שאין הכוכבים נראין מתוכה ⁠— כשרה.

Mishnah: A sukka that is meduvlelet and whose shade exceeds its sunlight is fit. A sukka whose roofing is thick like a house of sorts, even though it is so thick that the stars cannot be seen from within it, is fit.

גמ׳ מאי מדובללת? אמר רב: סוכה ענייה. ושמואל אמר: קנה עולה וקנה יורד.

Talmud: The Talmud asks: What is the meaning of meduvlelet? Rav said: It means an impoverished sukka, i.e., a sukka whose roofing is sparse, although at no point in the roofing is there a gap of 3 handbreadths. And Shmuel said: It means that the roofing is aligned with one reed ascending and one reed descending. There are two layers of roofing, with each reed on the upper layer situated directly above the space between each reed on the lower level.

רב תני חדא, ושמואל תני תרתי. רב תני חדא: סוכה מדובללת, מאי מדובללת ⁠— מדולדלת, שצילתה מרובה מחמתה ⁠— כשרה. ושמואל תני תרתי: מאי מדובללת ⁠— מבולבלת, ותרתי קתני: סוכה מבולבלת כשרה, וצילתה מרובה מחמתה ⁠— כשרה.

The Talmud explains: Rav taught the first clause in the Mishnah as one halakha, and Shmuel taught that clause as two halakhot. Rav taught one halakha: The halakha of a sukka meduvlelet. And what is a sukka meduvlelet? It is a sparse sukka. Nevertheless, as long as the shade exceeds the sunlight the sukka is fit. And Shmuel taught two halakhot. What is a sukka meduvlelet? It is a disordered sukka. And he teaches two halakhot: A disordered sukka is fit, and one whose shade exceeds its sunlight is fit.

אמר אביי: לא שנו, אלא שאין בין זה לזה שלשה טפחים, אבל יש בין זה לזה שלשה טפחים ⁠— פסולה. אמר רבא: אפילו יש בין זה לזה שלשה טפחים נמי לא אמרן, אלא שאין בגגו טפח, אבל יש בגגו טפח ⁠— כשרה. דאמרינן: חבוט רמי.

Abaye said: They taught that a sukka with two layers of roofing is fit only in a case where there is not a gap of at least 3 handbreadths between the top and bottom layers. However, if there is a gap of 3 handbreadths between them it is unfit. Rava said: Even if there is a gap of 3 handbreadths between them, we say that the two layers of roofing are not considered joined only in a case where there is not the width of a handbreadth in its upper roof. However, if there is the width of a handbreadth in its upper roof, even if the gap between them is 3 handbreadths, the sukka is fit, because we say that the principle: Lower and cast down the upper level of the sukka roofing down to the level of the lower sukka roofing, applies here.