‘Abdul-’Aziz bin Abu Hâzim said: My father told me: I asked Sahl bin Sa’d: “Did you ever see dough made from well 5……. flour?” He said: “I never saw dough made from well-sifted flour until the Messenger of Allah passed away.” I said: “Did they have sieves at the time of the Messenger of Allah P.B.U.H?“ He said: “i never saw a sieve until the Messenger of Allah P.B.U.H, passed away.” I said: “How did you eat barley that was not sifted?” He said: “We used to blow on it, and whatever flew away, flew away, and whatever was left we made dough with it.” (Sahih)