Комментарий к Зехарья 7:5

and in the seventh [month] That is the fast of Gedaliah.

Say — They said "on the fifth and the severth" even though there are four fast days. It mentions the fifth because upon it was the destruction, and the seventh because in it Gedaliah was killed, and it was a second destruction, because already the poorest of the land remained and were not destroyed, since the poorest of the land were kept by Nebuzadaran to be vine dressers and ditch diggers (II Kings 25:12), but Gedaliah was killed on the first day of the seventh month, and since it was a holiday they declared a fast the day after.

did you fast for Me, even for Me The ‘he’ is vowelized with a ‘hataf pattah’ because it is used as the interrogative: Did you fast in My honor that you should be required to fast now, too?

Did you fast Me, I? — did you fast Me, meaning did you fast for Me, that is to say, if you fasted on Mu account, on account of your sins the Temple was destroyed and you were exiled. On account of this you fast. If you perform justice and righteousness, you will not need to fast, for the House will be built and you will go up from exile and dwell in the land all days. If you do good in My eyes you will not ever be exiled from it. And what is the purpose that the "I" after "did you fast Me" serves? It is meant to say "Did I command you to fast?" And the Targum Yonatan translates as "On the fast did you fast your fasting before Me?"