Yamim Tovimימים טובים

The Significance of Lag BaOmer

Lag BaOmer marks the cessation of a plague that killed 24,000 students of Rabbi Akiva during the Omer period, as recorded in the Talmud. The day is observed by suspending mourning customs and permitting celebrations and grooming practices that are otherwise forbidden between Pesach and Shavuot.

אז פסקו מלמות

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Source 1 · Chazal
Verified

Talmud Yevamot

Yevamot 62b

The Talmud records that 24,000 students of Rabbi Akiva died between Pesach and Shavuot because they did not treat each other with proper respect. This is the foundational source for the mourning practices of the Omer period.

רַבִּי עֲקִיבָא אוֹמֵר: לָמַד תּוֹרָה בְּיַלְדוּתוֹ — יִלְמוֹד תּוֹרָה בְּזִקְנוּתוֹ. הָיוּ לוֹ תַּלְמִידִים בְּיַלְדוּתוֹ — יִהְיוּ לוֹ תַּלְמִידִים בְּזִקְנוּתוֹ, שֶׁנֶּאֱמַר: ״בַּבֹּקֶר זְרַע אֶת זַרְעֶךָ וְגוֹ׳״. אָמְרוּ: שְׁנֵים עָשָׂר אָלֶף זוּגִים תַּלְמִידִים הָיוּ לוֹ לְרַבִּי עֲקִיבָא מִגְּבָת עַד אַנְטִיפְרַס, וְכוּלָּן מֵתוּ בְּפֶרֶק אֶחָד, מִפְּנֵי שֶׁלֹּא נָהֲגוּ כָּבוֹד זֶה לָזֶה. וְהָיָה הָעוֹלָם שָׁמֵם, עַד שֶׁבָּא רַבִּי עֲקִיבָא אֵצֶל רַבּוֹתֵינוּ שֶׁבַּדָּרוֹם וּשְׁנָאָהּ לָהֶם: רַבִּי מֵאִיר, וְרַבִּי יְהוּדָה, וְרַבִּי יוֹסֵי, וְרַבִּי שִׁמְעוֹן, וְרַבִּי אֶלְעָזָר בֶּן שַׁמּוּעַ, וְהֵם הֵם הֶעֱמִידוּ תּוֹרָה אוֹתָהּ שָׁעָה. תָּנָא, כּוּלָּם מֵתוּ מִפֶּסַח וְעַד עֲצֶרֶת. אָמַר רַב חָמָא בַּר אַבָּא וְאִיתֵּימָא רַבִּי חִיָּיא בַּר אָבִין: כּוּלָּם מֵתוּ מִיתָה רָעָה. מַאי הִיא? אָמַר רַב נַחְמָן: אַסְכָּרָה.

Rabbi Akiva says that the verse should be understood as follows: If one studied Torah in his youth he should study more Torah in his old age; if he had students in his youth he should have additional students in his old age, as it is stated: “In the morning sow your seed, etc.” They said by way of example that Rabbi Akiva had twelve thousand pairs of students in an area of land that stretched from Gevat to Antipatris in Judea, and they all died in one period of time, because they did not treat each other with respect. And the world was desolate of Torah until Rabbi Akiva came to our Rabbis in the South and taught his Torah to them. This second group of disciples consisted of Rabbi Meir, Rabbi Yehuda, Rabbi Yosei, Rabbi Shimon, and Rabbi Elazar ben Shamua. And these are the very ones who upheld the study of Torah at that time. Although Rabbi Akiva’s earlier students did not survive, his later disciples were able to transmit the Torah to future generations. With regard to the twelve thousand pairs of Rabbi Akiva’s students, the Gemara adds: It is taught that all of them died in the period from Passover until Shavuot. Rav Ḥama bar Abba said, and some say it was Rabbi Ḥiyya bar Avin: They all died a bad death. The Gemara inquires: What is it that is called a bad death? Rav Naḥman said: Diphtheria.

Why it matters — This is the primary Talmudic source establishing why the Omer period is a time of mourning, and Lag BaOmer traditionally marks the day the plague stopped.

Source 2 · Chazal
Verified

Talmud Shabbat

Shabbat 33b

The Talmud relates how Rabbi Shimon bar Yochai and his son hid in a cave for twelve (then thirteen) years from the Romans, emerging as transformed spiritual masters. Upon his emergence, Rabbi Shimon became one of the era's greatest teachers of Torah.

אֲזַל הוּא וּבְרֵיהּ, טְשׁוֹ בֵּי מִדְרְשָׁא. כׇּל יוֹמָא הֲוָה מַתְיָא לְהוּ דְּבֵיתְהוּ רִיפְתָּא וְכוּזָא דְמַיָּא וְכָרְכִי. כִּי תְּקֵיף גְּזֵירְתָא אֲמַר לֵיהּ לִבְרֵיהּ: נָשִׁים דַּעְתָּן קַלָּה עֲלֵיהֶן, דִילְמָא מְצַעֲרִי לַהּ וּמְגַלְּיָא לַן. אֲזַלוּ טְשׁוֹ בִּמְעָרְתָּא. אִיתְרְחִישׁ נִיסָּא אִיבְּרִי לְהוּ חָרוּבָא וְעֵינָא דְמַיָּא, וַהֲווֹ מַשְׁלְחִי מָנַיְיהוּ וַהֲווֹ יָתְבִי עַד צַוְּארַיְיהוּ בְּחָלָא. כּוּלֵּי יוֹמָא גָּרְסִי. בְּעִידָּן צַלּוֹיֵי לָבְשִׁי מִיכַּסּוּ וּמְצַלּוּ, וַהֲדַר מַשְׁלְחִי מָנַיְיהוּ כִּי הֵיכִי דְּלָא לִיבְלוּ. אִיתִּיבוּ תְּרֵיסַר שְׁנֵי בִּמְעָרְתָּא. אֲתָא אֵלִיָּהוּ וְקָם אַפִּיתְחָא דִמְעָרְתָּא, אֲמַר: מַאן לוֹדְעֵיהּ לְבַר יוֹחַי דְּמִית קֵיסָר וּבְטִיל גְּזֵירְתֵיהּ. נְפַקוּ, חֲזוֹ אִינָשֵׁי דְּקָא כָּרְבִי וְזָרְעִי, אָמְרִין: מַנִּיחִין חַיֵּי עוֹלָם וְעוֹסְקִין בְּחַיֵּי שָׁעָה. כׇּל מָקוֹם שֶׁנּוֹתְנִין עֵינֵיהֶן מִיָּד נִשְׂרָף. יָצְתָה בַּת קוֹל וְאָמְרָה לָהֶם: לְהַחֲרִיב עוֹלָמִי יְצָאתֶם?! חִיזְרוּ לִמְעָרַתְכֶם! הֲדוּר אֲזוּל אִיתִּיבוּ תְּרֵיסַר יַרְחֵי שַׁתָּא. אָמְרִי: מִשְׁפַּט רְשָׁעִים בְּגֵיהִנָּם שְׁנֵים עָשָׂר חֹדֶשׁ. יָצְתָה בַּת קוֹל וְאָמְרָה: צְאוּ מִמְּעָרַתְכֶם! נְפַקוּ. כָּל הֵיכָא דַּהֲוָה מָחֵי רַבִּי אֶלְעָזָר, הֲוָה מַסֵּי רַבִּי שִׁמְעוֹן. אָמַר לוֹ: בְּנִי, דַּי לָעוֹלָם אֲנִי וְאַתָּה.

Rabbi Shimon bar Yoḥai and his son, Rabbi Elazar, went and hid in the study hall. Every day Rabbi Shimon’s wife would bring them bread and a jug of water and they would eat. When the decree intensified, Rabbi Shimon said to his son: Women are easily impressionable and, therefore, there is room for concern lest the authorities torture her and she reveal our whereabouts. They went and they hid in a cave. A miracle occurred and a carob tree was created for them as well as a spring of water. They would remove their clothes and sit covered in sand up to their necks. They would study Torah all day in that manner. At the time of prayer, they would dress, cover themselves, and pray, and they would again remove their clothes afterward so that they would not become tattered. They sat in the cave for twelve years. Elijah the Prophet came and stood at the entrance to the cave and said: Who will inform bar Yoḥai that the emperor died and his decree has been abrogated? They emerged from the cave, and saw people who were plowing and sowing. Rabbi Shimon bar Yoḥai said: These people abandon eternal life of Torah study and engage in temporal life for their own sustenance. The Gemara relates that every place that Rabbi Shimon and his son Rabbi Elazar directed their eyes was immediately burned. A Divine Voice emerged and said to them: Did you emerge from the cave in order to destroy My world? Return to your cave. They again went and sat there for twelve months. They said: The judgment of the wicked in Gehenna lasts for twelve months. Surely their sin was atoned in that time. A Divine Voice emerged and said to them: Emerge from your cave. They emerged. Everywhere that Rabbi Elazar would strike, Rabbi Shimon would heal. Rabbi Shimon said to Rabbi Elazar: My son, you and I suffice for the entire world, as the two of us are engaged in the proper study of Torah.

Why it matters — This dramatic Talmudic narrative about Rabbi Shimon bar Yochai's cave is deeply associated with the Lag BaOmer tradition and his spiritual greatness.

Source 3 · Chazal
Verified

Talmud Berakhot

Berakhot 61b

The Talmud describes Rabbi Akiva's martyrdom at the hands of the Romans and his declaration of Shema with his dying breath, demonstrating his total love of God — making him the defining spiritual figure whose students' deaths are mourned during the Omer.

בְּשָׁעָה שֶׁהוֹצִיאוּ אֶת רַבִּי עֲקִיבָא לַהֲרִיגָה זְמַן קְרִיאַת שְׁמַע הָיָה, וְהָיוּ סוֹרְקִים אֶת בְּשָׂרוֹ בְּמַסְרְקוֹת שֶׁל בַּרְזֶל, וְהָיָה מְקַבֵּל עָלָיו עוֹל מַלְכוּת שָׁמַיִם. אָמְרוּ לוֹ תַּלְמִידָיו: רַבֵּינוּ, עַד כָּאן?! אָמַר לָהֶם: כׇּל יָמַי הָיִיתִי מִצְטַעֵר עַל פָּסוּק זֶה ״בְּכָל נַפְשְׁךָ״ אֲפִילּוּ נוֹטֵל אֶת נִשְׁמָתְךָ. אָמַרְתִּי: מָתַי יָבֹא לְיָדִי וַאֲקַיְּימֶנּוּ, וְעַכְשָׁיו שֶׁבָּא לְיָדִי, לֹא אֲקַיְּימֶנּוּ? הָיָה מַאֲרִיךְ בְּ״אֶחָד״, עַד שֶׁיָּצְתָה נִשְׁמָתוֹ בְּ״אֶחָד״. יָצְתָה בַּת קוֹל וְאָמְרָה: ״אַשְׁרֶיךָ רַבִּי עֲקִיבָא שֶׁיָּצְאָה נִשְׁמָתְךָ בְּאֶחָד״. אָמְרוּ מַלְאֲכֵי הַשָּׁרֵת לִפְנֵי הַקָּדוֹשׁ בָּרוּךְ הוּא: זוֹ תּוֹרָה וְזוֹ שְׂכָרָהּ? ״מִמְתִים יָדְךָ ה׳ מִמְתִים וְגוֹ׳״! אָמַר לָהֶם: ״חֶלְקָם בַּחַיִּים״. יָצְתָה בַּת קוֹל וְאָמְרָה: ״אַשְׁרֶיךָ רַבִּי עֲקִיבָא שֶׁאַתָּה מְזוּמָּן לְחַיֵּי הָעוֹלָם הַבָּא״.

The Gemara relates: When they took Rabbi Akiva out to be executed, it was time for the recitation of Shema. And they were raking his flesh with iron combs, and he was reciting Shema, thereby accepting upon himself the yoke of Heaven. His students said to him: Our teacher, even now, as you suffer, you recite Shema? He said to them: All my days I have been troubled by the verse: With all your soul, meaning: Even if God takes your soul. I said to myself: When will the opportunity be afforded me to fulfill this verse? Now that it has been afforded me, shall I not fulfill it? He prolonged his uttering of the word: One, until his soul left his body as he uttered his final word: One. A voice descended from heaven and said: Happy are you, Rabbi Akiva, that your soul left your body as you uttered: One. The ministering angels said before the Holy One, Blessed be He: This is Torah and this its reward? As it is stated: “From death, by Your hand, O Lord, from death of the world” (Psalms 17:14); Your hand, God, kills and does not save. God said the end of the verse to the ministering angels: “Whose portion is in this life.” And then a Divine Voice emerged and said: Happy are you, Rabbi Akiva, as you are destined for life in the World-to-Come, as your portion is already in eternal life.

Why it matters — Understanding Rabbi Akiva's own story provides essential context for the significance of his students' deaths during the Omer and the Lag BaOmer break.

Source 4 · Acharonim
Verified

Shulchan Arukh, Orach Chayim

Shulchan Arukh, Orach Chayim 493:1-2

The Shulchan Arukh codifies the mourning practices during the Omer — no haircuts, no weddings — and notes the custom that on Lag BaOmer (the 33rd day), the mourning is suspended because the plague ceased.

נוהגים שלא להסתפר עד ל"ג לעומר שאומרים שאז פסקו מלמות ואין להסתפר עד יום ל"ד בבוקר אלא אם כן חל יום ל"ג ערב שבת שאז מסתפרים בו מפני כבוד השבת: הגה ובמדינות אלו אין נוהגין כדבריו אלא מסתפרין ביום ל"ג ומרבים בו קצת שמחה ואין אומרים בו תחנון (מהרי"ל ומנהגים) ואין להסתפר עד ל"ג בעצמו ולא מבערב (מהרי"ל) מיהו אם חל ביום א' נוהגין להסתפר ביום ו' לכבוד שבת (מהרי"ל) מי שהוא בעל ברית או מל בנו מותר להסתפר בספירה לכבוד המילה (הגהות מנהגים):

It is customary not to cut one's hair until Lag BaOmer, since it is said that that is when they stopped dying. One should not cut one's hair until the 34th day, in the morning, unless the 33rd day falls on Friday, in which case one may cut one's hair then, in honor of the Sabbath ("kavod Shabbat"). Rema: But in these countries, we do not follow the custom he advocates; rather, we cut our hair on the 33rd day, and we rejoice a bit, and we do not say Tachanun (Maharil and Minhagim). And one should only cut one's hair on the 33rd day itself, but not on its evening. However, if it falls on Sunday, our custom is to cut our hair on Friday in honor of the Sabbath (Maharil). Someone who is performing a brit milah (i.e., the sandak, mohel and the infant's father), or circumcizing his son, is allowed to cut his hair during sefirah in honor of the circumcision (Hagahot Minhagim).

Why it matters — The authoritative halakhic code that records the break in mourning on Lag BaOmer due to the cessation of the plague among Rabbi Akiva's students.

Source 5 · Modern
Verified

Mishnah Berurah

Mishnah Berurah 493:1

The Mishnah Berurah discusses the mourning customs of the Omer period and notes that on Lag BaOmer the students of Rabbi Akiva stopped dying, and thus it is customary to permit haircuts and celebrations on that day.

(א) שלא לישא אשה - ואין חילוק בין נשואין של מצוה כגון שאין לו בנים או יש לו כי כן פשט המנהג במדינתנו שלא לחלק ולהחזיר גרושה שרי שאינו כ"כ שמחה [אחרונים]:

1. Not to marry a woman—no distinction whether obligatory marriage or not; the custom in our region is uniform. Remarrying a divorcee is permitted as it's not such a joyous occasion.

Why it matters — This is a key halakhic source codifying why Lag BaOmer is treated as a day of relief from the Omer mourning restrictions.