Rif Shabbat 49b {Shabbat 126a-b}

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49b

{Shabbat 126a}
Whether it is fastened or not, providing that it was prepared {for this purpose before Shabbat}.

And the halacha is like the Sages {in the Mishna}, and even though the Tanna makes Rabbi Eliezer the stama {anonymous voice of the Mishna} {in Eruvin 102a, cited here in Shabbat 126a} regarding the dragging bolt, we establish like a different stama, that we learn in the Mishna {on Shabbat 157a} "AND FROM THEIR WORDS WE LEARN THAT WE MAY CLOSE [A SKYLIGHT] AND MEASURE AND TIE ON THE SABBATH" for it is a maaseh rav {-- the story regarding Ulla and Rabba bar Rav Huna on Shabbat 157b?}.

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We learn at the end of Eruvin {Eruvin 102a}: Rami bar Yechezkel sent to Rav Amram: Let Master say from those excellent words that he said to me in the name of Rav Assi concerning the canopies of boats.
And he sent to him: So said Rav Assi: These {poles of} canopies of boats, when they have in {under} them a handbreadth, or else if they do not have a handbreadth but there is not between one and the next 3 tefachim {such that we have lavud} he may bring a mat and spread upon it.
What is the reason?
He is adding to {an existing} temporary tent, and this is fine.

These rams which Rav Huna had rams which at night required fresh air and in daytime required a shady place, so he came to Rav {and asked him what to do on Shabbat}.
He {Rav} said to him: {on Friday} when you remove the covering of the stalls which the rams occupied during the day, do not quite remove all the covering, but leave a handbreadth covered. The next day {Shabbat}, spread {a covering} over it, for this is adding to a temporary tent, and is fine.

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{We return to Shabbat 126a}
They learnt {in a brayta}: If a house-owner prepares {=sets aside} a cane for opening and shutting [a door] therewith: if it is tied and suspended to the door, he may open and shut [it] therewith; if it is not tied and suspended may not open and shut [it] therewith. Rabban Shimon ben Gamliel says: If it is prepared even if it is not fastened and suspended. {Bach removes "and suspended"}

Rav Yehuda bar Shela {our gemara: Shelat} cited Rav Assi who cited Rabbi Yochanan: the halacha is like Rabban Shimon ben Gamliel.
and specifically where it has the status of a vessel. {i.e. providing that they have the character of utensil}

And we learn at the end of Eruvin {Eruvin 102a}: There was a שריתא - to explain, a beam {קורה} - in the house of Rabbi Pedat, which weighed such that it would be carried by 10 {men} and he placed it on the door. He said: It has the status of a vessel.

{Shabbat 126b}
MISHNA:
ALL LIDS OF UTENSILS WHICH HAVE A HANDLE MAY BE HANDLED ON THE SABBATH.

SAID R. JOSE, WHEN IS THAT SAID?
IN THE CASE OF LIDS OF GROUND [BUILDINGS], {e.d. lids of pits built into the ground} BUT THE LIDS OF UTENSILS MAY IN ANY CASE BE HANDLED ON THE SABBATH.

Gemara:
Rav Yehuda bar Shela {here, our gemara has also: Shela} cited Rav Assi who cited Rabbi Yochanan: Provided that they have the character of a utensil.
For all agree: Covers of ground [buildings may be handled] if they have a handle, yes; if not, no; covers of utensils, even if they have no handle, they are permitted.
Where do they differ? {Depending on if you take the text in parentheses or not, the Rif is dealing with the first or second version of the difference in the gemara.}
In respect to the cover of (an oven: one Master likens it to the cover of a ground [building], while the other Master likens it to the cover) of utensils, joined to the ground: The Tanna Kamma holds - we decree {preventively}, and Rabbi Yossi holds - we do not decree.

And the halacha is like the Tanna Kamma.

END PEREK SEVENTEEN