Numbers 19:7

אל המחנה [AND AFTERWARDS HE MAY COME] INTO THE CAMP — into the camp of the Shechina (in the case of the Temple at Jerusalem, into the forecourt, the עזרה, immediately in front of the Temple), from which alone he had been barred, for no unclean person was expelled from two camps (i.e. from more than one, viz., the מחנה שכינה) except a person with a running issue and a man who had experienced a seminal emission (who were expelled from the מחנה שכינה and מחנה לויה), and a leper (who had to remain outside all three) (cf. Pesachim 67a). וטמא הכהן עד הערב [AND AFTERWARDS HE SHALL COME INTO THE CAMP] AND THE PRIEST SHALL BE UNCLEAN UNTO THE EVENING — Invert its order (that of the phrases forming this half of the verse), and then explain it: He shall be unclean until the evening and afterwards he shall come into the camp (cf Rashi Leviticus 11:32 and Note thereon).

וְכִבֶּ֨ס בְּגָדָ֜יו הַכֹּהֵ֗ן וְרָחַ֤ץ בְּשָׂרוֹ֙ בַּמַּ֔יִם וְאַחַ֖ר יָבֹ֣א אֶל־הַֽמַּחֲנֶ֑ה וְטָמֵ֥א הַכֹּהֵ֖ן עַד־הָעָֽרֶב׃

Then the priest shall wash his clothes, and shall bathe his flesh in water, and afterwards he shall come into the camp, and the priest shall be unclean until the evening.