Rashi on Leviticus 16:16/רש"י על ויקרא ט״ז:ט״ז

1מטמאת בני ישראל [AND HE SHALL MAKE AN EXPIATION FOR THE HOLY PLACE] BECAUSE OF THE UNCLEANNESS OF THE CHILDREN OF ISRAEL — i. e. for those who entered the Sanctuary in a state of uncleanness without having finally become conscious of this fact (Shevuot 7b), for it is said לכל חטאתם, and the word חטאת implies a sin committed unconsciously.

2ומפשעיהם AND BECAUSE OF THEIR TRANSGRESSIONS — This implies atonement also for those who entered the Sanctuary presumptuously in a state of uncleanness (Shevuot 7b; cf. also Shevuot 2a and Sifra, Acharei Mot, Chapter 4 1).

3וכן יעשה לאהל מועד AND SO SHALL HE DO FOR THE APPOINTED TENT — Just as he sprinkled in the “Interior" (the Holy of Holies) from the blood of both of them (of the bullock and the goat) once upwards and seven times downwards so he sprinkles over against the Partition Vail from outside (i. e. standing in the היכל; cf. Leviticus 4:6) once upwards and seven times downwards (Sifra, Acharei Mot, Chapter 4 5; Yoma 56b).

4השכן אתם בתוך טמאתם— This implies that although they are unclean nevertheless the Shechinah dwells in their midst (Sifra, Acharei Mot, Chapter 4 5; Yoma 57a).