Eruvin — Daf 52b

כמאן כרב יוסף ואליבא דר' יוסי בר יהודה

לא כרבה ואליבא דר' יהודה:

ר"מ אומר כל שיכול לערב כו': הא תנינא חדא זימנא ספק ר"מ ורבי יהודה אומרים הרי זה חמר גמל

אמר רב ששת לא תימא טעמא דר"מ ספק עירב ספק לא עירב הוא דהוי חמר גמל אבל ודאי לא עירב לא הוי חמר גמל

אלא אפילו ודאי לא עירב הוי חמר גמל דהא הכא ודאי לא עירב וקא הוי חמר גמל:

מתני׳ מי שיצא חוץ לתחום אפילו אמה אחת לא יכנס ר"א אומר שתים יכנס שלש לא יכנס:

גמ׳ א"ר חנינא רגלו אחת בתוך התחום ורגלו אחת חוץ לתחום לא יכנס דכתיב (ישעיהו נח, יג) אם תשיב משבת רגלך רגלך כתיב

והתניא רגלו אחת בתוך התחום ורגלו אחת חוץ לתחום יכנס הא מני אחרים היא דתניא אחרים אומרים למקום שרובו הוא נזקר

איכא דאמרי אמר ר' חנינא רגלו אחת בתוך התחום ורגלו אחת חוץ לתחום יכנס דכתיב אם תשיב משבת רגלך רגליך קרינן

והתניא לא יכנס הוא דאמר כאחרים דתניא למקום שרובו הוא נזקר:

ר"א אומר שתים יכנס שלש לא יכנס: והתניא ר"א אומר אחת יכנס שתים לא יכנס לא קשיא הא דעקר חדא וקם אתרתי הא דעקר תרתי וקם אתלת

והתניא ר"א אומר אפילו אמה אחת לא יכנס כי תניא ההיא למודד דתנן ולמודד שאמרו נותנין לו אלפים אמה אפילו סוף מדתו כלה במערה:

מתני׳ מי שהחשיך חוץ לתחום אפילו אמה אחת לא יכנס ר"ש אומר אפילו חמש עשרה אמות יכנס שאין המשוחות ממצין את המדות מפני הטועין:

גמ׳ תנא מפני טועי המדה:

הדרן עלך מי שהוציוהו

מתני׳ כיצד מעברין את הערים בית נכנס בית יוצא פגום נכנס פגום יוצא היו שם גדודיות גבוהות עשרה טפחים

In agreement with whose view did he act? Was it in agreement with that of R. Joseph according to R. Jose son of R. Judah? No; in agreement with Rabbah according to R.Judah. R. MEIR RULED: WHOSOEVER IS ABLE TO PREPARE AN ‘ERUB etc. Have we not already learnt this once: If this is doubtful, the man, said R. Meir and R. Judah, [is in the position of both] an ass-driver and a camel-driver? — R. Shesheth replied: Do not say that R. Meir's view is that only where it is doubtful whether a man had a valid ‘erub or not is he in the position of an ass-driver and a camel-driver and that where it is certain that he prepared no ‘erub he is not in such a position; but rather even where it is certain that he prepared no ‘erub he is in the position of an ass-driver and camel-driver; for here, surely, it is a case where It is certain that the man had prepared no ‘erub and yet he is put in the position of an ass-driver and a camel-driver. MISHNAH. HE WHO WENT OUT BEYOND HIS SABBATH LIMIT EVEN ONLY A DISTANCE OF ONE CUBIT MUST NOT RE-ENTER. R. ELIEZER RULED: [IF A MAN WALKED] TWO CUBITS BEYOND HIS SABBATH LIMIT HE MAY RE-ENTER, [AND IF HE WALKED] THREE CUBITS HE MAY NOT RE-ENTER. GEMARA. R. Hanina ruled: If a man had one foot within his Sabbath limit and his other foot without that Sabbath limit, he may not re-enter, for it is written in Scripture: If thou turn away thy foot from the sabbath, the written form being ‘thy foot’. But was It not taught: If a man had one foot within his Sabbath limit and his other foot without, he may re-enter? — This represents the view of ‘Others’. For it was taught: Others maintain that a man is deemed to be where the greater part of his body is. Some there are who read: R. Hanina ruled: If a man had one foot within his Sabbath limit and his other foot without, he may re-enter, for it is written in Scripture: If thou turn away thy foot from Sabbath which is read as ‘thy feet’. But was it not taught: He may not re-enter? — He maintains the same view as ‘Others’, it having been taught: A man is deemed to be where the greater part of his body is. R. ELIEZER RULED: [IF A MAN WALKED)] TWO CUBITS BEYOND HIS SABBATH LIMIT HE MAY RE-ENTER [AND IF HE WALKED] THREE CUBITS HE MAY NOT RE-ENTER. But was it not taught: R. Eliezer ruled: If he walked one cubit beyond his Sabbath limit he may re-enter and if two cubits he may not reenter? — This is no difficulty, since the former refers to a person who left the first cubit but was still within the second, while the latter refers to one who left the second and was within the third. But was it not taught: R — Eliezer ruled: Even if he was one cubit beyond his Sabbath limit he may not re-enter? — This was taught concerning a measurer, for we have in fact learnt: And to the measurer of whom the Rabbis have spoken a distance of two thousand cubits only is allowed even if the end of his permitted measure terminated within a cave. MISHNAH. IF A MAN WAS OVERTAKEN BY DUSK WHEN ONLY ONE CUBIT OUTSIDE THE SABBATH LIMIT, HE MAY NOT ENTER IT. R. SIMEON RULED: EVEN IF HE WAS FIFTEEN CUBITS AWAY HE MAY ENTER SINCE THE SURVEYORS DO NOT MEASURE EXACTLY ON ACCOUNT OF THOSE WHO ERR. GEMARA. It was taught: On account of those who err in their measures. MISHNAH. HOW ARE THE SABBATH BOUNDARIES TO TOWNS EXTENDED? IF ONE HOUSE RECEDES AND ANOTHER PROJECTS, IF ONE TURRET [OF THE WALL] RECEDES AND ANOTHER PROJECTS, IF THERE WERE RUINS TEN HANDBREADTHS HIGH,