sukkah 2b

The Gemara explains why each of the Sages cited his own source and did not accept the sources cited by the others. All of them, Rabbi Zeira and Rava, did not say that the fact that a sukka more than twenty cubits high is unfit is derived from the verse: “So that your future generations will know that I caused the children of Israel to reside in sukkot when I took them out of the land of Egypt” (Leviticus 23:43), as did Rabba, because in their opinion that verse does not mandate one to be aware that he is sitting in a sukka; rather, it mandates knowledge for future generations of the exodus from Egypt. Similarly, they, Rabba and Rava, also did not say that it is derived from the verse: “And there shall be a sukka for shade in the daytime from the heat” (Isaiah 4:6), as did Rabbi Zeira, because in their opinion it is with regard to the messianic era that this verse is written. It means that God will be a shield and a shelter for the Jewish people; it is not referring to the structure of a sukka. The Gemara asks: And Rabbi Zeira, how would he respond to this objection? The Gemara answers that Rabbi Zeira could say: If it is so that the verse is merely a metaphor, let the verse say: And there shall be a canopy for shade in the daytime from the heat, which is the term used in the previous verse. And what is the meaning of: “And there shall be a sukka for shade in the daytime from the heat”? Learn from it two matters: One is the plain meaning of the verse, that God will be a canopy of glory for the Jewish people, and the second is that the essence of a sukka is to have the roofing provide shade. They, Rabba and Rabbi Zeira, also did not say that it is derived from the verse: “In sukkot shall you reside seven days” (Leviticus 23:42), as did Rava, due to the difficulty raised by Abaye with regard to a sukka with steel partitions. Since there is a weakness in each of the sources, it is understandable why the other Sages did not accept it. § The Gemara asks: In accordance with whose opinion is that which Rabbi Yoshiya said that Rav said: The dispute between Rabbi Yehuda and the Rabbis with regard to the fitness of a sukka more than twenty cubits high is specifically in a case where the walls of the sukka do not reach up to the roofing; however, in a case where the walls of the sukka reach up to the roofing, the Rabbis concede that even if the roofing is more than twenty cubits high, it is fit. In accordance with whose opinion is it? It is in accordance with the opinion of Rabba, who says that the reason that a sukka that high is unfit is because the eye does not automatically catch sight of the roofing. And since the walls of the sukka reach the roofing, the eye catches sight of the roofing, as the person will follow the walls all the way up to the roofing despite their considerable height. However, if the roofing is not contiguous with the top of the walls, a person does not notice it without a concerted effort. The Gemara asks: In accordance with whose opinion is that which Rav Huna said that Rav said: The dispute between Rabbi Yehuda and the Rabbis with regard to the fitness of a sukka more than twenty cubits high is specifically in a case where there is not an area of four cubits by four cubits in the sukka; however, in a case where there is an area of more than four cubits by four cubits in the sukka, the Rabbis concede that even if the roofing is more than twenty cubits high, it is fit. In accordance with whose opinion is it? It is in accordance with the opinion of Rabbi Zeira, who says that a sukka that high is unfit due to the shade that is provided by the walls and not by the roofing; and since the sukka in this case is spacious and has a large area, there is shade from the roofing of the sukka and not only from the walls.

A Hanukkah lamp that one placed above twenty cubits is invalid, just as a sukka whose roofing is more than twenty cubits high, and just as an alleyway whose beam, its symbolic fourth partition in order to place an eiruv, is more than twenty cubits high, are invalid. The reason is the same in all three cases: People do not usually raise their heads and see objects at a height above twenty cubits. As there is a requirement to see all of these, they are deemed invalid when placed above that height. And the Gemara cites another statement that Rav Kahana said that Rav Natan bar Manyumi taught in the name of Rav Tanḥum: What is the meaning of the verse that is written with regard to Joseph: “And they took him, and cast him into the pit; and the pit was empty, there was no water in it” (Genesis 37:24)? By inference from that which is stated: And the pit was empty, don’t I know that there was no water in it? Rather, why does the verse say: There was no water in it? The verse comes to emphasize and teach that there was no water in it, but there were snakes and scorpions in it.