Anas said they were told not to let more than forty days elapse between the times they clipped the moustache, pared the nails, plucked out hairs under the armipits and shaved the pubes.
Muslim transmitted it.
Ibn ‘Umar reported God’s messenger as saying, "Do the opposite of what the polytheists do ; let the beard grow long and clip the moustache.” A version has, “Cut the moustache down and leave the beard.”
(Bukhari and Muslim.)
Narrated Abu Huraira reported God’s messenger as saying, “The ancient prophetical sunna (The Arabic word is fitra. Its basic meaning is the manner in which one is created. It is also used for the religion of Islam. But in this tradition the meaning is said to be the sunna followed by the prophets from of old:
circumcision, shaving with a razor, clipping the moustache, paring the nails, and plucking out hairs under the armpit.”
(Bukhari and Muslim.)
