en_tn/lev/14/02.md

the day of his cleansing

This refers to the day on which the priest declares the person to be ritually clean.

He must be brought to the priest

This can be translated in active form. Alternate translation: "Someone must bring him to the priest" or "He must go to the priest" (See: rc://en/ta/man/jit/figs-activepassive)