(ד) הִלֵּל אוֹמֵר, אַל תִּפְרֹשׁ מִן הַצִּבּוּר
(4) Hillel said: do not separate yourself from the community,
Abaye said to Rav Yosef: Did Shmuel actually say this? But doesn’t Shmuel say that the law of the kingdom is the law, i.e., the halakha obligates Jews to observe the laws of the locale in which they reside, and the king said that land may not be acquired without a document? Therefore, taking possession should not be effective for acquisition. Rav Yosef said to him: I do not know how to reconcile this contradiction, but there was an incident in the village of Dura that was founded by shepherds, where there was a Jew who purchased land from a gentile by giving money, and in the interim another Jew came and plowed it a bit. The two Jews came before Rav Yehuda for a ruling, and he established the property in the possession of the second individual. This accords with the ruling of Shmuel that the property is ownerless until a Jew performs an act of acquisition.
(יד) וְכֵיצַד מְצֻוִּין הֵן עַל הַדִּינִין. חַיָּבִין לְהוֹשִׁיב דַּיָּנִין וְשׁוֹפְטִים בְּכָל פֶּלֶךְ וּפֶלֶךְ לָדוּן בְּשֵׁשׁ מִצְוֹת אֵלּוּ. וּלְהַזְהִיר אֶת הָעָם
(14) How must the Noachides fulfill the commandment to establish laws and courts? They are obligated to set up judges and magistrates in every major city to render judgement concerning these six mitzvot and to admonish the people regarding their observance.