Sukkah 13B

אלא אימא: עד שתהא תחלתו כשיריו אחד.

Rather, emend the baraita and say: It is unfit only when its origins, like its remnants, are one.

דרש מרימר: הני איסורייתא דסורא ⁠— מסככין בהו. אף על גב דאגדן ⁠— למנינא בעלמא הוא דאגדן.

Mareimar taught: With regard to these bundles of reeds from Sura that are bound for sale, one may roof the sukka with them. Although the seller bound them, he bound them merely to ascertain the number more readily, and they will not remain bound.

אמר רבי אבא: הני צריפי דאורבני, כיון שהותרה ראשי מעדנים שלהן ⁠— כשרין. והא אגידי מתתאי! אמר רב פפא: דשרי להו.

R' Abba said: With regard to these huts made of willow branches, once their upper ties holding them together are undone, they are fit roofing. The Talmud asks: But aren’t they still tied from below? Rav Pappa said: R' Abba is referring to a case where he unties them from below as well.

(ואמר) רב הונא בריה דרב יהושע: אפילו תימא דלא שרי להו, כל אגד שאינו עשוי לטלטלו ⁠— לא שמיה אגד.

Rav Huna, son of Rav Yehoshua, said: Even if you say that R' Abba is referring to a case where one does not untie them from below, they are fit for sukka roofing, as any binding that is not destined to be moved is not considered a binding. Since these huts are untied from above, were one to attempt to move them, they would fall apart.

אמר רבי אבא אמר שמואל: ירקות שאמרו חכמים אדם יוצא בהן ידי חובתו בפסח, מביאין את הטומאה, ואין חוצצין בפני הטומאה, ופוסלין בסוכה משום אויר. מאי טעמא ⁠— כיון דלכי יבשי פרכי ונפלי, כמאן דליתנהו דמי.

§ R' Abba said that Shmuel said: With regard to vegetables about which the rabbis said: One fulfills his obligation to eat bitter herbs on Passover, if they are spread over a source of ritual impurity imparted by a corpse, they transmit ritual impurity, and the impurity spreads to objects beneath them. And, nevertheless, the rabbis decreed that they do not serve as a barrier before the spread of ritual impurity. The impurity breaches roofing made of these vegetables and rises upward, as if there were no covering over it. If one roofs a sukka with these vegetables, it is as if they were not there at all, and they render a sukka unfit due to the unfitness of airspace. Just as 3 handbreadths of airspace in the roofing renders a sukka unfit, so too, 3 handbreadths of these vegetables in the roofing renders a sukka unfit. What is the reason for this halakha? Since when they dry they crumble and fall, even while fresh, they are as one that is not there.