"Laying tefillin" refers to the daily mitzvah (commandment) observed by Jewish men, typically from the age of Bar Mitzvah (13 years old) and onwards. Tefillin are two small black leather boxes containing scrolls of parchment inscribed with specific Torah verses. These boxes are attached to leather straps and are worn during morning prayers.

One box is placed on the arm, with the strap wound around the arm and hand, symbolizing the dedication of physical actions to Hashem. The other box is placed on the forehead, representing the devotion of one's thoughts and intellect. The mitzvah of laying tefillin is a deeply symbolic act, emphasizing the connection between the mind, heart, and actions in service to Hashem.

This daily practice is a reminder of the covenant between the Jewish people and Hashem, reinforcing their commitment to follow the Torah and live a life aligned with its teachings.