Yerushalmi Eruvin 10:3 ירושלמי עירובין י׳:ג׳

MISHNAH: He who reads a scroll on the threshold⁹Šabbat 1, Note 68. and the scroll rolls away from his hand, rolls it back to himself¹⁰Even though part of the scroll is now in the public domain, as long as he holds on to part of the scroll, rolling it back is not transporting from public to private domain.. If he was reading on a rooftop and the scroll rolls away from his hand, if it did not reach ten hand-breadths¹¹Since the airspace over public domain above 10 hand-breadths from the ground is exempt space, taking the scroll back from the air over the public domain does not infringe any rabbinic rule. he rolls it back to himself; but after it reached ten hand-breadths he turns it upside down on the writing. Rebbi Jehudah says, even if it is removed from the ground only a thread’s width he rolls it back to himself. Rebbi Simeon says, even from the ground itself he rolls it back to himself¹⁰Even though part of the scroll is now in the public domain, as long as he holds on to part of the scroll, rolling it back is not transporting from public to private domain., since no rabbinic Sabbath prohibition stands before Holy Scripture.

HALAKHAH: Paragraph. The Mishnah: On the threshold it is permitted, but outside the threshold it is forbidden⁷⁶In the public domain one may not move anything which is more than 4 cubits from the mover.. Explain it that he was sitting there reading when it still was daytime, or he forgot and took it out⁷⁷Since the threshold is karmelit, it should have been forbidden to bring the scroll to the threshold in the first place. It either must have been there before the start of the Sabbath or was brought there inadvertently.. Before it reaches ten hand-breadths he rolls it back to himself. After it reaches ten hand-breadths it is forbidden. Rebbi Jacob bar Aḥa in the name of Rebbi Yasa: It is Rebbi Jehudah’s who said that it is forbidden to use the airspace within ten hand-breadths⁷⁸Šabbat 11, Note 49..

“But after it reached ten hand-breadths he turns it upside down on the writing.” Why? That the writing should not be debased. This parallels what Rebbi Aḥa said in the name of .Rebbi Samuel bar Naḥman: If a scroll is not covered by a cloth one turns it upside down on the writing so that the writing should not be debased⁷⁹Also Megillah 1:7, 71d l. 31; Sopherim 3:16..

“Rebbi Jehudah says, even if it is removed from the ground only a thread’s width he rolls it back to himself..” The argument of Rebbi Jehudah is inverted. There⁷⁸Šabbat 11, Note 49. he says, it is forbidden to use the airspace within ten hand-breadths; and here he says so? Rebbi Joḥanan said, here there is no Rebbi Jehudah, only Rebbi Meïr, the words of the Sages. Rebbi Yose said in the name of Rebbi Joḥanan: Not only a scroll but even a belt⁸⁰Latin fascia, -ae, f. “band, girdle”. The rule of the Mishnah is one of the rules of karmelit, not a special leniency for holy writings..