קאי עלייהו רב ייבא סבא אמרו ליה הב לן וניבריך לסוף אמרו ליה הב לן ונישתי אמר להו הכי אמר רב כיון דאמריתו הב לן וניבריך איתסרא לכו למישתי מאי טעמא דאסחיתו דעתייכו
and Rav Yeiva the Elder stood over them to serve them. They said to him: Give us a cup of wine and we will recite the blessings of Grace after Meals. Ultimately, they changed their mind and said to him: Give us a cup of wine and we will drink it. He said to them that Rav said as follows: Since you have said: Give us a cup and we will recite the blessings of Grace after Meals, it is prohibited for you to drink any more. What is the reason for this? The reason is that you have diverted your attention from drinking. Therefore, if you want to drink any more, you must recite the blessing over wine again.
אמימר ומר זוטרא ורב אשי הוו יתבי בסעודה וקאי עלייהו רב אחא בריה דרבא אמימר בריך על כל כסא וכסא ומר זוטרא בריך אכסא קמא ואכסא בתרא רב אשי בריך אכסא קמא ותו לא בריך
The Gemara relates that Ameimar, Mar Zutra, and Rav Ashi were sitting at a meal, and Rav Aḥa, son of Rava, stood over them to serve them. Ameimar recited a blessing over each and every cup of wine he drank. And Mar Zutra recited a blessing over the first cup he drank during the meal and over the last cup he drank, upon concluding Grace after Meals. Rav Ashi recited a blessing over the first cup and did not recite any further blessings over the subsequent cups he drank.
אמר להו רב אחא בר רבא אנן כמאן נעביד אמימר אמר נמלך אנא מר זוטרא אמר אנא דעבדי כתלמידי דרב
Rav Aḥa bar Rava said to them: In accordance with whose opinion should we act in this matter? We have witnessed three different courses of action. Ameimar said: I repeatedly changed my mind. In other words, the reason Ameimar recited a blessing over each cup was not because he maintains that it is always necessary to do so. Rather, he drank each cup with the intention that it should be his last. Consequently, he diverted his attention from drinking each time, and therefore he was required to recite a new blessing before he could drink again. Mar Zutra said: I acted in accordance with the opinion of the students of Rav. They maintain that one who prepares to recite Grace after Meals has completely diverted his attention from drinking, and therefore the blessing on wine that one recites during the meal does not include the wine he drinks after Grace after Meals.
ורב אשי אמר לית הילכתא כתלמידי דרב דהא יום טוב שחל להיות אחר השבת ואמר רב יקנה
And Rav Ashi said: The halakha is not in accordance with the opinion of the students of Rav. This can be proven from a ruling of Rav himself, as with regard to a Festival that occurs after Shabbat, Rav said that the order of blessings is yod, kuf, nun, heh: Wine [ yayin], kiddush, candle [ner], and havdala. This shows that although one recites kiddush between the blessing over wine and havdala, it is unnecessary to recite the blessing over wine again before havdala. The same should hold true in our case: Just as kiddush is not considered an interruption between the blessing over wine and its consumption, Grace after Meals should not be considered an interruption either.
ולא היא התם עקר דעתיה ממשתיא הכא לא עקר דעתיה ממשתיא
The Gemara rejects this reasoning: And that is not so. There, when one is preparing himself to recite Grace after Meals, he has already uprooted his mind from drinking. Here, with regard to kiddush and havdala, he has not uprooted his mind from drinking.
כי מטא לאבדולי קם שמעיה ואדליק אבוקה משרגא אמר ליה למה לך כולי האי הא מנחא שרגא אמר ליה שמעא מדעתיה דנפשיה קא עביד אמר ליה אי לא שמיע ליה מיניה דמר לא הוה עביד אמר ליה לא סבר ליה מר אבוקה להבדלה מצוה מן המובחר
After discussing the opinion of the students of Rav, the Gemara returns to the story of Rav Ya’akov bar Abba’s visit to Rava. When the time came to recite havdala, Rava’s attendant got up and lit a torch from a candle. Rav Ya’akov bar Abba said to him: Why do you need all this? The candle was present, and you could have recited the blessing over the light of the candle itself. Rava said to him: The attendant did this on his own accord, without consulting me. Rav Ya’akov bar Abba said to him: If he had not heard it from the Master he would not have done it on his own; he must have been following your opinion on this matter. Rava said to him: Does the Master not maintain that using a torch for havdala is the optimal manner in which to fulfill the mitzva? It is for this reason that the attendant lit a torch for havdala.
פתח ואמר המבדיל בין קודש לחול בין אור לחשך בין ישראל לעמים בין יום השביעי לששת ימי המעשה אמר ליה למה לך כולי האי והאמר רב יהודה אמר רב המבדיל בין קודש לחול זו היא הבדלתו של רבי יהודה הנשיא
Rava began his recitation of havdala and said: Who distinguishes between sacred and profane, between light and darkness, between Israel and the nations, between the seventh day and the six days of work. Rav Ya’akov bar Abba said to him: Why do you need all this? Didn’t Rav Yehuda say that Rav said with regard to the statement: Who distinguishes between sacred and profane, that this alone is the havdala of Rabbi Yehuda HaNasi? Why is this plain statement not enough for you?
אמר ליה אנא כהא סבירא לי דאמר רבי אלעזר אמר רבי אושעיא הפוחת לא יפחות משלש והמוסיף לא יוסיף על שבע אמר ליה
He said to him: I maintain in accordance with this statement that Rabbi Elazar said that Rabbi Oshaya said: One who decreases the number of distinctions in the text of the havdala should not decrease them to less than three, and one who increases the number of distinctions should not increase them to more than seven. Rav Ya’akov bar Abba said to him: