וְעָשִׂ֥יתָ בִגְדֵי־קֹ֖דֶשׁ לְאַהֲרֹ֣ן אָחִ֑יךָ לְכָב֖וֹד וּלְתִפְאָֽרֶת׃
E faça vestes sagradas para Aharon, seu irmão, para glória e ornamento.
Mishneh Torah, Positive Mitzvot
That the priests shall put on priestly vestments for the service, as it is said, “And thou shalt make holy garments for Aaron, thy brother” (Ex. 28:2).