Sforno on Leviticus 16:23/ספורנו על ויקרא ט״ז:כ״ג

1והניחם שם, for he had offered them in the presence of G’d so that they attained additional sanctity, and it is not appropriate even for the High Priest to wear them after they had performed the assigned task. (according to Yuma 12 these garments are buried forthwith or otherwise locked away.)