אם כן ביטלת תורת עירוב מאותו מבוי
If so, you have abolished the halakhic category of eiruv from that alleyway. Since from a halakhic perspective it is considered as though only one person lives in that alleyway, there is no need for an eiruv. Consequently, when the residents carry in it without an eiruv, observers will mistakenly think that it is permitted to carry in an alleyway even without an eiruv.
דמערבי יאמרו עירוב מועיל במקום גוי דמכרזינן
Rav Huna, son of Rav Yehoshua, replied: It is required that they establish an eiruv anyway, as a reminder of the laws of eiruvin, even though it serves no halakhic purpose. Rava retorted that this in turn results in a different problem: Observers will then say that an eiruv is effective even in the place of a gentile, even if he does not rent out his domain, which is against the halakha. He replied: We make an announcement to the effect that they are not carrying because of the eiruv, and that it only serves as a reminder.
Rava rejected this option as well: Can we make an announcement for the children? Even if it is assured that all adults present will hear the announcement, how will the children, who do not hear or understand the announcement, know the halakha later in life? Recalling that their fathers established an eiruv in this alleyway, they will think that an eiruv is effective even in the place of a gentile. Therefore, one cannot rely on Abaye’s solution.
אלא אמר רבא ליזיל חד מינייהו ליקרב ליה ולשאול מיניה דוכתא ולינח ביה מידי דהוה ליה כשכירו ולקיטו ואמר רב יהודה אמר שמואל אפילו שכירו ואפילו לקיטו נותן עירובו ודיו
Rather, Rava said that the gentile’s Jewish neighbors should proceed as follows: Let one of them go and become friendly with the gentile, and ask him for permission to make use of a place in his domain, and set something down there, thus becoming like the gentile’s hired laborer or harvester. And Rav Yehuda said that Shmuel said: Not only can the gentile himself rent out his domain for the purpose of an eiruv, but even his hired laborer, and even his harvester, if he is a Jew, may rent out the space and contribute to the eiruv on his behalf, and this is enough.
אמר ליה אביי לרב יוסף היו שם חמשה שכירו וחמשה לקיטו מהו אמר ליה אם אמרו שכירו ולקיטו להקל יאמרו שכירו ולקיטו להחמיר
Abaye said to Rav Yosef: If there were five hired laborers or five harvesters there, what is the halakha? Does the presence of more than one of these, if they are all Jews, entail a stringency, such that they are all required to join in the eiruv or that they are all required to rent out his domain? Rav Yosef said to him: If the Sages said that the gentile’s hired laborer or harvester stands in his place as a leniency, would they say that his hired laborer or harvester stands in his place as a stringency? This law was stated only as a leniency with regard to the laws of renting for the purpose of an eiruv, not in order to introduce more stringencies.
גופא אמר רב יהודה אמר שמואל אפילו שכירו ואפילו לקיטו נותן עירובו ודיו אמר רב נחמן כמה מעליא הא שמעתא
The Gemara proceeds to examine the ruling cited in the course of the previous discussion. Returning to the matter itself, Rav Yehuda said that Shmuel said: Even the gentile’s hired laborer, and even his harvester, may contribute to the eiruv in his stead, and this is enough. Rav Naḥman said: How excellent is this halakha. Even Rav Naḥman agreed with this statement, and viewed it as correct and substantiated.
אמר רב יהודה אמר שמואל שתה רביעית יין אל יורה אמר רב נחמן לא מעליא הא שמעתא דהא אנא כל כמה דלא שתינא רביעתא דחמרא לא צילא דעתאי
However, Rav Naḥman did not give his approval to all of Rav Yehuda’s rulings, as Rav Yehuda said that Shmuel said: If one drank a quarter-log of wine, he may not issue a halakhic ruling, as the wine is liable to confuse his thinking. With regard to this second statement, Rav Naḥman said: This halakha is not excellent, as concerning myself, as long as I have not drunk a quarter-log of wine, my mind is not clear. It is only after drinking wine that I can issue appropriate rulings.
אמר ליה רבא מאי טעמא אמר מר הכי האמר רבי אחא בר חנינא מאי דכתיב ורועה זונות יאבד הון כל האומר שמועה זו נאה וזו אינה נאה מאבד הונה של תורה אמר ליה הדרי בי
Rava said to Rav Naḥman: What is the reason that the Master said this, making a statement that praises one halakha and disparages another? Didn’t Rabbi Aḥa bar Ḥanina say: What is the meaning of that which is written: “But he who keeps company with prostitutes [zonot] wastes his fortune” (Proverbs 29:3)? It alludes to the following: Anyone who says: This teaching is pleasant [zo na’a] but this is not pleasant, loses the fortune of Torah. It is not in keeping with the honor of Torah to make such evaluations. Rav Naḥman said to him: I retract, and I will no longer make such comments concerning words of Torah.
אמר רבה בר רב הונא שתוי אל יתפלל ואם התפלל תפלתו תפלה שיכור אל יתפלל ואם התפלל תפלתו תועבה
On the topic of drinking wine, Rabba bar Rav Huna said: One who has drunk wine must not pray, but if he nonetheless prayed, his prayer is a prayer, i.e., he has fulfilled his obligation. On the other hand, one who is intoxicated with wine must not pray, and if he prayed, his prayer is an abomination.
היכי דמי שתוי והיכי דמי שיכור כי הא דרבי אבא בר שומני ורב מנשיא בר ירמיה מגיפתי הוו קא מפטרי מהדדי אמעברא דנהר יופטי אמרו כל חד מינן לימא מילתא דלא שמיע לחבריה דאמר מרי בר רב הונא לא יפטר אדם מחבירו אלא מתוך דבר הלכה שמתוך כך זוכרו
The Gemara poses a question: What are the circumstances in which a person is considered one who has drunk wine; and what are the circumstances in which a person is considered one who is intoxicated with wine? The Gemara answers that one can learn this from the following event: As Rabbi Abba bar Shumni and Rav Menashya bar Yirmeya from Gifti were taking leave of each other at the ford of the Yofti River, they said: Let each one of us say something that his fellow scholar has not yet heard, for Mari bar Rav Huna said: A person must take leave of his fellow only in the midst of a discussion of a matter of halakha, as due to this he will remember him.
פתח חד ואמר היכי דמי שתוי והיכי דמי שיכור שתוי כל שיכול לדבר לפני המלך שיכור כל שאינו יכול לדבר לפני המלך
One of them opened the discussion and said: What are the circumstances where a person is considered one who has drunk wine, and what are the circumstances where a person is considered one who is intoxicated with wine? One who has drunk wine refers to anyone who has drunk wine but whose mind remains clear enough that he is able to talk in the presence of a king. One who is intoxicated refers to anyone who is so disoriented by the wine he has drunk that he is not able to talk in the presence of a king.
פתח אידך ואמר המחזיק בנכסי הגר מה יעשה ויתקיימו בידו יקח בהן ספר תורה אמר רב ששת אפילו
The other one then opened a different discussion and said: With regard to one who took possession of a convert’s property, what should he do so that it remains in his hands? The property of a convert who died without children is regarded as ownerless, and is acquired by the first person to perform a valid act of acquisition upon it. Since in this case the one who took possession of the property did not acquire it through his own labor, his ownership is tenuous, and he is liable to lose it unless he uses it for the purpose of a mitzva. One in this situation should buy a Torah scroll with part of the revenue, and by the merit of this act, he will retain the rest. Rav Sheshet said: Even