Yahya related to me from Malik from Nafi from Abdullah ibn Umarthat the Messenger of Allah, may Allah bless him and grant him peace,said, "O Allah, have mercy on those who shave their hair." They said,"And those who shorten (their hair), Messenger of Allah." He said,"O Allah, have mercy on those who shave." They said, "And those whoshorten, Messenger of Allah." He said, "And those who shorten."