Reference for Oktzin 3:10
כַּוֶּרֶת דְּבוֹרִים, רַבִּי אֱלִיעֶזֶר אוֹמֵר, הֲרֵי הִיא כְקַרְקַע, וְכוֹתְבִין עָלֶיהָ פְּרוֹזְבּוּל, וְאֵינָהּ מְקַבֶּלֶת טֻמְאָה בִמְקוֹמָהּ, וְהָרוֹדֶה מִמֶּנָּה בְּשַׁבָּת חַיָּב חַטָּאת. וַחֲכָמִים אוֹמְרִים, אֵינָהּ כְּקַרְקַע, וְאֵין כּוֹתְבִים עָלֶיהָ פְּרוֹזְבּוּל, וּמְקַבֶּלֶת טֻמְאָה בִמְקוֹמָהּ, וְהָרוֹדֶה מִמֶּנָּה בְּשַׁבָּת פָּטוּר:
Regarding a beehive, Rabbi Eliezer says: it is thereby like land, and one can write a <i>Pruzbul</i> [a court-issued exemption from the Sabbatical year cancellation of a personal loan] on it [i.e. it counts as land for the purposes of the requirement that the borrower own land in order for a <i>Pruzbul</i> to be written], and it cannot be rendered impure in its place [i.e. as long as it is not moved], and one who removes [honey] from it on Shabbat is liable [to bring] a sin-offering. But the Sages say: it is not like land, and one many not write a <i>Pruzbul</i> on it, and it can be rendered impure in its place, and one who removes [honey] from it on Shabbat is exempt [from bringing a sin-offering].