Yosef Chaim, Ben Ish Chai: Halakhot: Year One…
“ And behold "Tammuz Av" is gematria te'enah/fig, and in this we understand bs"d (Prov. 27:18) "Notzer te'enah/He who keeps the fig tree" -- in present tense -- "yochal piryah/shall eat of its fruit" in the future to come, when they reverse to days of good. And it is known that the churban and all the evils that befell Yisrael were due to the sin with the Tree of Knowledge which was a fig tree, as Chazal said, and there are also those who reason that it was a grape vine, and they are both words of the Living God, that it was this and it was that. ”
