Talmud for Eruvin 10:3
הָיָה קוֹרֵא בַסֵּפֶר עַל הָאַסְקֻפָּה, נִתְגַּלְגֵּל הַסֵּפֶר מִיָּדוֹ, גּוֹלְלוֹ אֶצְלוֹ. הָיָה קוֹרֵא בְרֹאשׁ הַגַּג וְנִתְגַּלְגֵּל הַסֵּפֶר מִיָּדוֹ, עַד שֶׁלֹּא הִגִּיעַ לַעֲשָׂרָה טְפָחִים, גּוֹלְלוֹ אֶצְלוֹ. מִשֶּׁהִגִּיעַ לַעֲשָׂרָה טְפָחִים, הוֹפְכוֹ עַל הַכְּתָב. רַבִּי יְהוּדָה אוֹמֵר, אֲפִלּוּ אֵין מְסֻלָּק מִן הָאָרֶץ אֶלָּא כִמְלֹא מַחַט, גּוֹלְלוֹ אֶצְלוֹ. רַבִּי שִׁמְעוֹן אוֹמֵר, אֲפִלּוּ בָאָרֶץ עַצְמוֹ גּוֹלְלוֹ אֶצְלוֹ, שֶׁאֵין לְךָ דָּבָר מִשּׁוּם שְׁבוּת עוֹמֵד בִּפְנֵי כִתְבֵי הַקֹּדֶשׁ:
If one were reading a scroll [(All of their books were rolled up like our Torah scrolls)] on the lower door-sill, [which is a karmelith], and it unraveled from his hand, he may roll it back to himself [since one end was in his hand]. If he were reading on top of a roof and the scroll unraveled from his hand — As long as it has not reached the ten [lower] tefachim [close to the ground of the public domain], he turns it over on the writing, [the letters facing the wall, so that it not be overtly demeaned, and he leaves it there until dark. For if the end were not in his hand, he would be in transgression of a Torah prohibition (if he picked it up), and "the end in his hand" is decreed against by reason of "the end not in his hand." The gemara asks: "But it did not come to rest!" That is, even though it reached the ten lower tefachim there is no Torah prohibition here, even if the end were not in his hand, for it did not come to rest in the public domain. And it answers: We are speaking of an instance in which the wall is slanted and the scroll came to rest upon the wall projection of the lower ten tefachim, which is tantamount to its resting in the public domain, so that if the end were not in his hand and he brought it back, he would be liable by Torah law.] R. Yehudah says: Even if it were only a needle's-distance from the ground, he rolls it back to himself. [Our Mishnah is defective. It was taught thus: If it reached ten tefachim from the ground, he turns it over on the writing. When is this so? With a slanted wall, where it has come to rest. But with a wall that is not slanted, he rolls it back. These are the word of R. Yehudah, who says that even if it is only a needle's-distance from the ground, he rolls it back to himself, resting on an object being required (for liability).] R. Shimon says: Even if it were on the ground itself, he rolls it back to himself, for nothing proscribed by reason of shvuth (Sabbath resting) overrides (the sanctity of) the holy scriptures, [as in this instance, when the end is in his hand and he transgresses only rabbinical "shvuth" if he comes to roll it back. For he is not liable by Torah law unless the scroll leaves his hand entirely and comes to rest in the public domain and he comes to remove it from the public domain and place it in the private domain. The halachah is not in accordance with R. Shimon.]