Someone asked Hazrat Sahl (may Allah be pleased with him) whether the Noble Prophet (peace and blessings be upon him) had seen sifted flour with his own eyes before his passing. He replied that the Noble Prophet (peace and blessings be upon him) never saw sifted flour with his own eyes until he met Allah. The questioner asked, "Did you people have sieves during the Prophetic era?" He replied, "We did not have sieves." The questioner asked, "Then what did you do with barley?" He replied, "We used to blow on it; whatever was to fly away would fly away."