The passage lists five calamities that befell the Jewish people on the Seventeenth of Tammuz, including the breaking of the tablets and the breaching of the city wall, which are commemorated together as part of the fast of the fourth month.
משנה: חֲמִשָּׁה דְבָרִים אֵירְעוּ אֶת אֲבוֹתֵינוּ בְּשִׁבְעָה עָשָׂר בְּתַמּוּז וַחֲמִשָּׁה בְּתִשְׁעָה בְאָב. בְּשִׁבְעָה עָשָׂר בְּתַמּוּז נִשְׁתַּבְּרוּ הַלּוּחוֹת וּבָטַל הַתָּמִיד וְהוֹבְקְעָה הָעִיר וְשָׂרַף אַפּוֹסְטוֹמוֹס אֶת הַתּוֹרָה וְהֶעֱמִיד צֶלֶם בַּהֵיכָל. בְּתִשְׁעָה בְאָב נִגְזַר עַל אֲבוֹתֵינוּ שֶׁלֹּא יִכָּנְסוּ לָאָרֶץ וְחָרַב הַבַּיִת בָּרִאשׁוֹנָה וּבַשְּׁנִיָּה וְנִלְכְּדָה בֶּיתָּר וְנֶחְרְשָׁה הָעִיר. תַּנֵּי רִבִּי שִׁמְעוֹן בֶּן יוֹחַי. עֲקִיבָה רִבִּי הָיָה דוֹרֵשׁ. כֹּה אָמַר יי צְבָאוֹת צוֹם הָרְבִיעִי וְצוֹם הַחֲמִישִׁי וְצוֹם הַשְּׁבִיעִי וְצוֹם הָעֲשִׂירִי יִהְיֶה לְבֵית יִשְׂרָאֵל לְשָׂשׂוֹן וּלְשִׂמְחָה. צוֹם הָרְבִיעִי זֶה שִׁבְעָה עָשָׂר בַּתַּמּוּז. יוֹם שֶׁנִּשְׁתַּבְּרוּ הַלּוּחוֹת. וּבָטַל הַתָּמִיד. וְהוֹבְקְעָה הָעִיר. וְשָׂרַף אַפּוֹסְטוֹמוֹס אֶת הַתּוֹרָה. וְהֶעֱמִיד צֶלֶם בַּהֵיכָל. צוֹם הַחֲמִישִׁי. זֶה תִשְׁעָה בְאַב. שֶׁבּוֹ חָרַב הַבַּיִת בָּרִאשׁוֹנָה וּבַשְּׁנִיָיה. צוֹם הַשְּׁבִיעִי זֶה שְׁלֹשָׁה בַתִּשְׁרֵי שֶׁנֶּהֱרַג בּוֹ גְּדַלְיָה בֶּן אֲחִיקָם. צוֹם הָעֲשִׂירִי. זֶה עֲשָׂרָה בַטֵּבֵת. יוֹם שֶׁסָּמַךְ מֶלֶךְ בָּבֶל עַל יְרוּשָׁלִַם.
MISHNAH: Five things happened to our forefathers on the Seventeenth of Tammuz and five on the Ninth of Av. On the Seventeenth of Tammuz were the tablets broken, the daily sacrifice ceased, the city was breached, Apostomos burned the Torah, and put up an idol in the Temple. On the Ninth of Av was decided that our forefathers would not enter the Land, the Temple was destroyed the first and second times, Betar was taken, and the city ploughed over. Rebbi Simeon ben Yohai stated: So was my teacher Aqiba explaining. So says the Eternal of Hosts, the fast of the fourth, the fast of the fifth, the fast of the seventh, and the fast of the tenth will be for the House of Israel enjoyment and joy. The fast of the fourth is the Seventeenth of Tammuz, the day when the tablets were broken, the daily sacrifice ceased, the city was breached, Apostomos burned the Torah, and put an idol in the Temple. The fast of the fifth is the Ninth of Av, when the Temple was destroyed the first and the second times. The fast of the seventh is the third of Tishre, when Gedalya ben Aḥiqam was murdered. The fast of the tenth is the Tenth of Tevet, the day when the King of Babylonia closed in on Jerusalem.