Parashas Metzora · Passuk 15:24
Chabad.org — English translation + Rashi
Torah Temima points to Niddah 33a.
English: “And her niddah shall be upon him” — it was taught: One might think he follows her remaining days; Scripture teaches “and he shall be impure seven days.”
Independent seven-day count for the man
Chazal require the man to count a full seven days of his own, not merely the remainder of her niddah period.