He shall purify himself, and wash... — The rendering should be, he (i.e., the clean person) shall purify him (i.e., the unclean person), and he (the unclean person) shall wash...
Related Commentaries of Numbers 19:19
Numbers 19:19
19 And the clean person shall sprinkle upon the unclean on the third day, and on the seventh day: and on the seventh day he shall purify himself, and wash his clothes, and bathe himself in water, and shall be clean at even.