וְסַלְעוֹ֙ מִמָּג֣וֹר יַֽעֲב֔וֹר וְחַתּ֥וּ מִנֵּ֖ס שָׂרָ֑יו נְאֻם־יְהוָ֗ה אֲשֶׁר־א֥וּר לוֹ֙ בְּצִיּ֔וֹן וְתַנּ֥וּר ל֖וֹ בִּירוּשָׁלִָֽם׃ (ס)
Y de miedo pasará su fortaleza y sus príncipes tendrán pavor de la bandera, dice SEÑOR, cuyo fuego está en Sión, y su horno en Jerusalem.
Eruvin
In Jerusalem, as it is written “…the word of the Lord, whose fire is in Zion and whose stove is in Jerusalem.” (Isaiah 31:9) It was taught in the school of R’ Yishmael: ‘whose fire is in Zion’ refers to gehinnom, ‘whose stove is in Jerusalem’ refers to the entrance to gehinnom.