Shabbat Hazon
The Sabbath of Vision (Shabbat Hazon) immediately precedes Tisha b’Av. The name derives from the initial word of the week’s haftarah, in which Isaiah (1:1–27) prophesies the terrible afflictions that God will inflict upon the Israelites as punishment for their sins. Shabbat Hazon occurs during the period of mourning (Nine Days) for the destruction of the Temple, which is commemorated on Tisha b’Av.
Eisenberg, Ronald L.: The JPS Guide to Jewish Traditions. 1st ed. Philadelphia : The Jewish Publication Society, 2004, S. 154