tefillin shel yad
Quick Summary
In Judaism, tefillin shel yad, or hand phylacteries, are one of two small, black leather cube-shaped cases containing Torah texts written on parchment. These are worn by Jewish males 13 years and older during daily morning services, except on the Sabbath and festivals. This practice, rooted in the biblical commandment in Deuteronomy 6:8, serves as a reminder of God and the obligation to observe Jewish law. The hand phylactery has one compartment with texts on a single parchment, and it is worn on the arm, facing the heart. The other phylactery, tefillin shel rosh, is worn on the head.12
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