בְּתוֹךְ תּוֹכוֹ

ביטוי (אנגלית)

deep down / in one's heart of hearts

הגדרה (אנגלית)

In one's innermost depth.

("Everything that is inside it becomes impure, but not what is in its innermost part; like a barrel that is placed in the oven with its opening above the oven — the vermin in the oven eat and drink from the barrel, which is pure." - Sifra Shemini, Parashah 7)