Musnad Ahmad 1153:408

Husayn narrated to us, Dawayd narrated to us, from Abu Sahl, from Sulayman ibn Ruman, the freed slave of Urwah, from Urwah, from Aisha, that she said: "By the One who sent Muhammad with the truth, he never saw a sieve, nor did he eat sifted bread, from the time Allah, the Almighty and Majestic, sent him until He took his soul." I said: "How did you eat barley?" She said: "We would blow upon it."