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1)

(a) 'Kol ha'Kelim Nitalin le'Tzorech ve'she'Lo le'Tzorech. Rebbi Nechemyah Omer, Ein Nitalin Ela le'Tzorech'. What does 'she'Lo le'Tzorech' mean, according to ...

1. ... Rabah (or Abaye, according to the Rif and Rosh)?
2. ... Rava?

(b) What does ...

1. ...'le'Tzorech Gufo'...
2. ... 'le'Tzorech Mekomo ...

... mean, according to Rebbi Nechemyah?

(a) According to Rabah, how will Rebbi Nechemyah permit the removal of dirty dishes from the table on Shabbos?

(b) The Mishnah in Beitzah forbids using a block of wood on Yom-Tov (even though it is fit to use as fire-wood), to support a pot or a door.
Why is that?

(c) Why is it not permitted on Shabbos itself, since even a 'Davar she'Melachto le'Isur' is permitted 'le'Tzorech Gufo u'Mekomo'?

(a) The Mishnah in Beitzah permits lowering fruit through a sky-light from the roof (where it is drying) on Yom-Tov (but not on Shabbos); another Mishnah in Perek Rebbi Eliezer de'Milah - states 'Ein Bein Yom-Tov le'Shabbos Ela Ochel Nefesh Bilevad. These two Mishnahs appear contradictory. How does the Gemara refute the suggestion that the author of the first Mishnah is Rebbi Yehoshua (who permits bringing up the second animal after a mother and child fell into a pit - and he has Shechted the first one), whereas the author of the second Mishnah, which forbids it, is Rebbi Eliezer?

(b) The Gemara concludes that in fact, the author of the first Mishnah is Beis Hillel, and of the second Mishnah, Beis Shamai.
What is their Machlokes?

(c) Beis Shamai is stringent there with regard to the Melachah of carrying. How do we know that they will also be stringent with regard to Muktzah (Tiltul, which is only an Isur de'Rabbanan)?

4)

(a) What did Rav say regarding a spade - that conforms with the opinion of Rava (discussed earlier in the Sugya).

(b) However, it appears from his statement 'Bring a trap (or a beam) for (Rav) Kahana to sit on', that he only permits a 'Davar she'Melachto le'Isur' - 'le'Tzorech Gufo' and not 'le'Tzorech Mekomo' (not like Rava).
How does the Gemara therefore amend Rav's statement, to conform with Rava?

(c) The Gemara adds 'I Nami, Hasam me'Chamah le'Tzel Havah'.
What does this mean? How does this answer the Kashya?

(d) Why did Rava say to Rav Mari bar Rachel that anyone but for him was permitted to move his furs?

(a) Why was a broom considered a 'Davar she'Melachto le'Isur'?

(b) What Din does a table-brush have in this regard?

(c) Rav forbade moving a broom out of the sun on Shabbos.
What did Rebbi Elazar hold?

(a) According to the Tana Kama, a broken vessel may be moved, provided it is for for some use or other.
What does Rebbi Yehudah say?

(b) According to him, what would ...

1. ... a broken earthenware dish ...
2. ... a broken glass dish ...

... need to be fit for, in order to be permitted?

(a) The Gemara thought that our Mishnah speaks when the vessels broke *before* Shabbos, but had they broken *on* Shabbos, they will both agree that the broken pieces are not even Muktzah.
Why is that?

(b) The Gemara is forced to retract from this contention on the basis of the Mishnah in Beitzah (in connection with Yom-Tov): 'Masikin be'Kelim, ve'Ein Masikin be'Shivrei Kelim'. How do we know that the vessels there broke on Yom-Tov? Why may one not then burn them?

(c) How does the Gemara finally explain Shmuel, who differentiates between vessels that broke on Shabbos and vessels that broke on Erev Shabbos, and how do we now explain the Machlokes between the Tana Kama and Rebbi Yehudah in our Mishnah in that light?

(a) How do we reconcile the three Beraisos: 'Masikin be'Kelim, ve'Ein Masikin be'Shivrei Kelim'; 'Ke'shem she'Masikin be'Kelim, Kach Masikin be'Shivrei Kelim'; 'Ein Masikin Lo be'Kelim ve'Lo be'Shivrei Kelim'?

(b) When are bricks that remain from a building project, Muktzah?

(a) Why is a piece of clay in a courtyard not Muktzah?

(b) Shmuel holds that it is however, Muktzah in a Karmelis, since one does not normally find vessels there to cover.
What does Rav Nachman say about that?

(c) And what does Rav Nachman say about a piece of clay in the street?

(d) Rava permits a piece of clay even in the street.
Why? What did he say to the Rabbanan who shouted at his servant for picking up a piece of clay in the street?

(a) If a barrel breaks, why do its pieces and its lid not become Muktzah?

(b) What does 'Lo Yispos Mimenu Shever Lechasos Bah es ha'K'li' etc. mean?

(c) Is one permitted to retrieve the lid, if he threw it into the trash pan ...

1. ... on Shabbos?
2. ... before Shabbos?