Tosefta su I Cronache 16:36

[From where do we derive that the Second Temple was also destroyed on the Ninth of Av (Taan. 4:6)?] Rabbi Yosei says, a meritorious matter is brought about on an auspicious day, and a deleterious matter on an inauspicious day (Taan. 29a:11 (Steinsaltz tr.)). When they destroyed the First Temple, it was at the conclusion of Shabbat, and the conclusion of the Sabbatical year, and it was the watch of Yehoyariv, and the Ninth of Av. And so too with the Second [Temple]. And [at the time of both destructions] the Levites were standing on their platform and saying (Ps. 94:23), "And He will turn their iniquity [and their evil] upon them, etc." In the future, when the Temple will be rebuilt, what does it say (1 Chr. 16:36), "Blessed be Hashem, God of Israel, from Eternity until Eternity," [and] (Ps. 72:18-19), "He performs wonders alone, and blessed is His glorious name [forever], etc."