Rashi
Jewish
1040–1105
“Judah went into exile from her land. and great servitude with which the Chaldeans burdened her. she settled among the nations and in the place where she was exiled and settled she found no rest. between the boundaries where there is a high place on either side, and there is no place to flee. the boundaries Heb. הַמְצָרִים, the boundaries of fields and vineyards. The Midrash Aggadah (Lam. Rabbah 1:29) explains: between the seventeenth of Tammuz and the ninth of Av.”