Al-Albaani: Have you seen if a man were to go against the natural disposition that Allaah created mankind on [al-Fitrah] in five things … he عليه السلام said, “Five things are from the fitrah: trimming the moustache, plucking the armpit hair, shaving the pubic hair, cutting the nails and circumcision.’ What do you say about a person for whom Allaah created a beard but he does away with it, He created a moustache for him but he does away with that [too]? He made nails for him and ordered him to trim them but he doesn’t, going the opposite way to the fitrah, He created a pubic region for him but he leaves it as it is—and it [thus becomes] a replacement for the beard which he eradicated up top [on his face], instead it grows underneath, what do you say about a person who opposes Allaah’s fitrah [which He created man on] in these issues? Is this a person or a wild beast? His nails are like a predatory animal’s, and his armpits have two other beards, he doesn’t pluck them, and there is another beard between his thighs, this is in opposition to the natural inborn inclination of man [fitrah] … this is a wild animal …”
Al-Hudaa wan-Noor, 447.