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You forgot quote this bit from the same link....
Some statements of the Shafi’i A’immah:
Imam An-Nawawi states in his Minhaj,
“The third (nullifier of wudhu’) is the touching of skin by a man and a woman, except for the mahram (permanently unmarriageable persons; example – Mother) according to the strongest opinion. And the one touched is just like the one being touched according to the soundest opinion. A young child, hair, teeth, do not nullify wudhu’ according to the correct opinion (in the school).”11
Imam Ahmad ibn Naqib Al-Masri states nearly the same except that he adds “…a severed limb…”
