TT #243 · Parshas Tazria · Aliyah 7 · Passuk 45
English: As for the person afflicted with tzaraas, his garments shall be torn, his head shall be unkempt, he shall cover his upper lip, and he shall call out, “Impure! Impure!”
Torah Temimah cites Moed Katan 15a for this teaching on the metzora’s public conduct and ritual status.
English: Rabbi Akiva compares the wording about the head with the wording about the garment: just as the garment is external to the body, so too the head requirement refers to something external. The Gemara asks whether this refers to tefillin.
Textual derivation
The Gemara explores whether the metzora’s head-related requirement affects wearing tefillin.