Rashi on Leviticus 14:9/רש"י על ויקרא י״ד:ט׳

1את כל שערו [HE SHALL CUT OFF] ALL HIS HAIR etc. — We have a generalisation (“all his hair”), a particularisation (“his head and his beard and his eyebrows”), and again a generalisation (“and all his hair”). According to the rule of interpretation (מדה ו' י״ג מדות) the purpose of this is to include in the generalisation only such things as are similar to those contained in the particularisation; here it intends to include every spot of the body where there is a collection of hair, it (the hair) being visible (these being the characteristics of the head, beard and eyebrows) (Sotah 16a).