כך מפסיקין להבדלה מאי מפסיקין לאו לעקירת שולחן לא למפה

so one interrupts for havdala? People eating a meal on Shabbat until after nightfall must interrupt their meal to recite havdala. The Gemara inquires: What is the meaning of the phrase: One interrupts? Is it not referring to removing the table? The Gemara answers: No, it is referring to spreading a cloth, which is sufficient for havdala as well.

רבה בר רב הונא איקלע לבי ריש גלותא אייתו תכא קמיה פרס מפה וקידש תניא נמי הכי (ושוין) שאין מביאין את השולחן אלא אם כן קידש ואם הביא פורס מפה ומקדש

The Gemara relates: Rabba bar Rav Huna happened to come to the house of the Exilarch. His hosts were reclining for a meal, and the attendants brought a table before him so he could eat as well. Since Shabbat had already started, he spread a cloth over the food and recited kiddush. That was also taught in a baraita: And the Sages agree that one may bring the table only if he has already recited kiddush; and if one brought out the table before kiddush, he should spread a cloth over the food and recite kiddush.

תני חדא שוין שאין מתחילין ותניא אידך שוין שמתחילין בשלמא הא דתניא שוין שאין מתחילין משכחת לה בערב הפסח

It was taught in one baraita: Rabbi Yehuda and Rabbi Yosei, who disagree over whether it is permitted to eat from minḥa time on Shabbat eve and whether one must interrupt his meal, agree that one may not begin a meal from this time. And it was taught in the other baraita that they agree that one may begin a meal. The Gemara explains: Granted, that which was taught in the first baraita, that Rabbi Yehuda and Rabbi Yosei agree that one may not begin a meal, you will find that this is correct with regard to the eve of Passover, as even Rabbi Yosei concedes that one may not start a meal on Passover eve ab initio.

אלא הא דתניא שוין שמתחילין אימת אי נימא בערב שבת הא מיפלג פליגי לא קשיא כאן קודם תשעה כאן לאחר תשעה

However, with regard to the other baraita, which taught that Rabbi Yehuda and Rabbi Yosei agree that one may begin, when does this halakha apply? If we say it is referring to the eve of Shabbat, this cannot be the case, as it was taught that Rabbi Yehuda and Rabbi Yosei indeed disagree over whether one may start a meal at that time. The Gemara answers: It is not difficult: Here, the baraita in which Rabbi Yehuda and Rabbi Yosei agree that it is permitted to start a new meal, is referring to before nine hours of the day have passed, as everyone agrees that it is permitted to commence a meal at this time. Conversely, there, the baraita in which they disagree over whether it is permitted to start a new meal, is referring to later in the day, after nine hours.

אותם בני אדם שקידשו בבית הכנסת אמר רב ידי יין לא יצאו ידי קידוש יצאו ושמואל אמר

The Gemara continues to discuss the halakhot of kiddush: With regard to those people who recited kiddush in the synagogue, as was customarily done at the conclusion of the prayer service on Shabbat night, Rav said: They have not fulfilled their obligation to recite a blessing over wine. That is, the blessing over the wine in the synagogue does not enable them to drink wine at home without an additional blessing. However, they have fulfilled their obligation of reciting kiddush. And Shmuel said: