Parashas Acharei Mos · Passuk 16:23
Chabad.org — English translation + Rashi
Torah Temima points to Yoma 32a.
English: “Which he put on” — Why state “which he put on”? Does a person remove something he did not put on? Rather, to equate removal with donning: just as donning requires sanctification, so does removal.
Hekesh via superfluous phrase.
The phrase “which he put on” is not mere description; it equates the act of removing the garments with the act of putting them on so that both require kiddush yadayim v’raglayim.