מדרש אויף יואל 1:5

She weeps bitterly in the night (Lamentations 1:2) - Let our teacher the priests teach us - is it permitted for them to immerse for their terumah offering on the Ninth of Av? Rabbi Chanina the deputy High Priest said: It would suffice for the House of our God to forgo one immersion. (Beraisa Taanit 13a) Needless to say, we must recall the destruction of the Temple.

Joel came and said to her: "Stand and accept a cup of comfort." She said: What is in your cup? He said: God said when I redeem you, in the future the mountains will trickle wine and it says "On that day the mountains will drip with wine" (Joel 4:18). She said: Your comforts have been given to you! Yesterday you said to me "Wail, all drinkers of wine, over the new wine cut off" (Joel 1:5), and now you say "the mountains will drip with wine"? Whom shall we believe, the first or the last? "How can you console me? Your answers remain treachery."