Parashas Metzora · Passuk 14:14
Chabad.org — English translation + Rashi
Torah Temima points to Negaim 14:9.
English: “And on the thumb of his hand …” — if he has no right thumb, no right big toe, or no right ear, he has no permanent purification.
Absence of the required limbs
Chazal teach that a person lacking the right thumb, right big toe, or right ear cannot complete the purification rite that requires those specific points.