The “Mezuzah” is a small scroll of parchment on which are written two Biblical passages: they are, “Hear O Israel, the Lord our God, the Lord is One…” (Devarim 6:4-9) and “And it shall be that if you carefully observe My Commandments …” (Devarim 11:13-21). Before the Mezuzah is affixed to one’s door-post, one recites the following B’rachah: “Blessed are You, Lord our God, King of the universe, Who has sanctified us with His Commandments and has commanded us to Affix the Mezuzah.” The Mezuzah case, with its scroll inside, is then nailed or screwed or glued to the upper third of the right side of the door frame, leaning inward towards the interior of the house or the room.