Jabir told that when Abu Quhafa (Abu Bakr’s father) was brought on the day of the Conquest of Mecca with his head and beard white like hyssop, the Prophet said, “Change this with something, but avoid black.”
Muslim transmitted it.
Ibn ‘Abbas said the Prophet liked to do the same as the People of the Book in matters about which he had received no command. The People of the Book used to let their hair hang down and the polytheists used to part their hair, so the Prophet let his forelock hang down, but afterwards he parted it.
(Bukhari and Muslim.)
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.