In addition, many of the specific details of the Biblical mitzvot are only derived via rabbinical application of the Oral Torah (Mishna/Gemarah); for example, the reading of the Shema (Deuteronomy 6:4-7), the binding of the tefillin and the fixing of the mezuzah (Deuteronomy 6:8-9), and the saying of Grace After Meals (Deuteronomy 8:10).
It is also given a Midrashic interpretation as an acronym, standing for "Guardian of the Doors of Israel" (Hebrew: שׁוֹמֶר דְלָתוֹת יִשְׂרָאֶל), which is commonly found as carvings or writings upon the mezuzah, a vessel which houses a scroll of parchment with Biblical text written on it, that is situated upon all the door frames in a home or establishment.