It’s All Good

Have you ever heard a wonderful d’var Torah and told the speaker, “That’s a good vort!”? It may be a good vort, but your praise may not be so good.
The Gemara in Shabbos records an interesting dialogue. The laws of eiruv chatzeiros are complex—and not relevant to this article. However, just to provide some context to the following dialogue, a brief introduction is in order. An eriuv chatzeiros is necessary when there are many private dwellings that share a common area such as a walled courtyard. Even though the courtyard is walled, an eiruv chatzeiros must be made to permit carrying on Shabbos from the private homes to the common area. Every family contributes a small amount of bread and places it in one of the private homes. This halachically unites all the residences. The problem arises if one of the homes is owned by a gentile, who obviously doesn’t need the eiruv.
Rav Yehudah said in the name of Shmuel: It suffices if a renter of the gentile contributes towards the eiruv. Rav Nachman commented: This is a superb teaching!