With regard to a bridegroom’s canopy, which has no roof but is entirely sloped, it is permitted to spread it and it is permitted to dismantle it on Shabbat.

Rav Sheshet, son of Rav Idi, said: We only said that it is permitted in a case where its roof is not a handbreadth wide; however, if its roof is a handbreadth wide, it is prohibited. Furthermore, even when its roof is not a handbreadth wide, we only said that it is permitted where there is not the width of a handbreadth within three handbreadths of its roof; however, if it expands to the width of a handbreadth within three handbreadths of its roof, it is prohibited. And we only stated that it is permitted where there is not in its incline the width of a handbreadth; however, if there is in its incline the width of a handbreadth, it is prohibited. This halakha is in accordance with the principle that the inclines of tents, even though they are not actual roofs, are considered like tents. And we only said that this canopy is permitted where no part of the canopy descends to a handbreadth below the bed; however, if part of the canopy descends to a handbreadth below the bed, it is prohibited, as the bed itself becomes a roof, and the curtain is considered a wall.

And Rav Sheshet, son of Rav Idi, also said: Wearing this felt hat is permitted on Shabbat, even though it has a wide brim and is similar to a tent. The Gemara raises a difficulty: Wasn’t it stated elsewhere that it is prohibited to wear a felt hat on Shabbat? The Gemara answers: This is not difficult: This latter statement, which prohibited wearing the hat, is referring to a case where its brim has the width of a handbreadth wide and is similar to a tent. That statement by Rav Sheshet, which permits wearing the hat, is referring to a case where its brim does not have the width of a handbreadth.

The Gemara asks: But if that is so, if one extended his cloak a handbreadth beyond his head, would you also say that he is liable for making a tent? Rather, this is not difficult. The reason the hat is prohibited is not due to making a tent, but due to concern that the wind might blow the cap off one’s head and he will come to carry it by hand. The conflicting statements can be resolved as follows: This statement of Rav Sheshet, which permits wearing the hat, is referring to a case where it is fitted firmly on his head. That statement, which prohibits wearing the hat, is referring to a case where it is not fitted firmly.

Rami bar Yeḥezkel sent to Rav Huna: Say to us, please, those excellent statements that you said to us in the name of Rav, two with regard to the halakhot of Shabbat, and one with regard to the Torah.

Rav Huna sent to him in response: With regard to that which was taught in a baraita: It is permitted to spread a large wineskin and suspend it by its straps on Shabbat, Rav said: They only taught that it is permitted if it is performed by two people together. They do not stretch the wineskin like a tent; rather, they place it without stretching it. However, it is prohibited for one person to do so by himself, due to the concern that he may establish a tent of sorts.

Abaye said: And it is prohibited to spread a canopy on Shabbat even with ten people. The reason for this is that it is impossible that it will not be stretched a bit for a certain period of time, which would establish a temporary tent.

And the other halakha with regard to Shabbat, what is it? As it was taught in a baraita: In the case of a stove, one of whose legs fell, it is permitted to move it on Shabbat. Since it remains a vessel, it may be moved if it is taking up a space that is needed. However, if two of its legs fell, it is prohibited, since it is then a broken vessel. Rav said: Even if only one leg fell, it is also prohibited to handle it, due to a decree lest one fasten the leg in place forcefully and be liable for preparing a vessel for use.

With regard to Torah, Rav Huna related that Rav said: The Torah is destined to be forgotten from the Jewish people. It is stated at the conclusion of the curses in the Torah’s reproof: ''And the Lord will make your plagues astonishing, and the plagues of your seed, great plagues of long continuance, and evil diseases of long continuance'' (Deuteronomy 28:59). This term of astonishment, mentioned in the verse in addition to the explicit punishments, I do not know what it is. But when the verse states elsewhere: ''Therefore, behold, I will continue to astonish this people with wondrous astonishment, and the wisdom of its wise will be lost, and the understanding of its men of understanding shall be hidden'' (Isaiah 29:14), you must say: This astonishment is referring to forgetting the Torah.

The Sages taught a similar idea in the Tosefta: When our Sages entered the vineyard in Yavne, they said: The Torah is destined to be forgotten from the Jewish people, as it is stated: ''Behold, days are approaching, says the Lord God, and I will send forth a hunger in the land, not a hunger for bread and not a thirst for water, but for hearing the words of the Lord'' (Amos 8:11). And it states: ''And they will drift from sea to sea, and from north to east they will roam to find the word of the Lord, but they will not find it'' (Amos 8:12).

''The word of the Lord'' in this context bears many meanings. ''The word of the Lord''; that is halakha. ''The word of the Lord''; that is the end of days. ''The word of the Lord''; that is prophecy. All these will be lost from the Jewish people.

And what is the meaning of: ''They will roam to find the word of the Lord, but they will not find it''? They said: It is destined that a woman will take a loaf of teruma bread and circulate among the synagogues and study halls to ascertain whether it is ritually impure or whether it is ritually pure, and there will be none who understands.

The Gemara asks: How is it possible that they will be unable to understand whether the loaf is ritually pure or whether it is ritually impure? It is explicitly written in the Torah with regard to this: ''All food that is eaten upon which water falls shall contract impurity, and all liquid drunk in any vessel shall contract impurity'' (Leviticus 11:34). There can be no doubt as to the question of whether or not the loaf can become impure. Rather, the Gemara explains: The woman seeks to ascertain whether it assumes first-degree ritual impurity status or whether it assumes second-degree ritual impurity status; and there will be none who understands.

The Gemara asks: That too is an explicit mishna, and how is it that none will know an explicit mishna? As we learned in a mishna: If the carcass of a creeping animal was found in the airspace of an oven, the bread inside it assumes second-degree ritual impurity status, as the creeping animal, which is a primary source of impurity, renders the oven impure with first-degree ritual impurity. The oven then renders the bread impure with second-degree ritual impurity.

The Gemara responds: They are uncertain with regard to that which Rav Adda bar Ahava said to Rava: Let us view this oven as one filled with impurity, and the bread will then assume first-degree ritual impurity status. In other words, the legal status of food in the airspace of an earthenware vessel that also has the carcass of a creeping animal in its airspace is that of food that came into contact with the creeping animal, even if the food does not come into contact with the carcass of a creeping animal.

He said to him that we do not say: Let us view the oven as one filled with ritual impurity, as it was taught in a baraita: One might think that all vessels should become ritually impure in the airspace of an earthenware vessel that has the carcass of a creeping animal in its airspace; therefore, the verse states: ''And any earthenware vessel in which any of them falls, all that is in it shall be impure, and you shall break it. All food that is eaten, upon which water comes, shall be impure; and all drink that may be drunk, in any vessel, shall be impure'' (Leviticus 11:33–34). The baraita learns from the juxtaposition of these verses that foods become ritually impure in the airspace of earthenware vessels, but vessels do not become ritually impure in the airspace of earthenware vessels. Apparently, the airspace of an oven is not considered filled with the impurity of the carcass of a creeping animal. If that were the case, even vessels would become ritually impure.

An opposing view was taught in another baraita. Rabbi Shimon ben Yoḥai says: Heaven forfend that the Torah should be forgotten from the Jewish people, as it is stated: ''And this song shall answer to him as a witness, for it shall not be forgotten from his seed'' (Deuteronomy 31:21). Rather, how do I explain: ''They will roam to find the word of God, but they will not find it''? It means that they will not find