Halakhah do Królów II 25:8

And on the seventeenth day of Tammuz, five things occurred. The tablets were broken. And the [daily] sacrifice in the first Temple ceased. And the city of Jerusalem was breached at the [time of] the destruction of the second Temple. And Apostimos burned the Torah and set up an image in the [Temple] chamber. And so [too] on the ninth of Av, five things also occurred. 1) It was decreed in the desert that Israel would not enter the land. 2-3) And the Temple was destroyed, the first and the second. As at the end of II Kings 25 8-9, it is written, "And on the fifth month on the ninth of the month, in the twelfth year of the reign of Nevuchadnetsar...came Nevuzaradan... and the burned the House of the Lord." And at the end of Jeremiah 52:12, it is written about this very story, "on the tenth of the month." And they said in Taanit, "It was taught, 'It is impossible to say on "on the seventh," as behold it has already been stated "on the tenth;" and it is impossible to say "on the tenth," as behold it has already been stated "on the seventh." So how is this? On the seventh, they entered the chamber, etc. On the ninth close to darkness, they set it on fire and it continued to burn the entire day of the tenth'" (Taanit 29a). 4) And Beitar was conquered on it, and there were thousands and tens of thousands of Jews [there]. And there was a king there and many imagined that he was the king Messiah. But the sins caused that they were all killed and they were also not allowed to be buried, and it was a great woe like the destruction of the Temple. 5) And on this day that is fit for punishments, the evil Turnus Rufus plowed over the [Temple] chamber, in order to fulfill that which was stated, "Zion will be plowed for a field."