Silsilat al-Ahadith al-Sahihah

Sayyidah Umm Ayman (may Allah be pleased with her) narrates that she sifted flour and baked bread for the Prophet (peace and blessings be upon him). The Prophet (peace and blessings be upon him) said: "What is this?" She said: "This is food which we prepare in our area. I wanted to bake a loaf for you as well." The Prophet (peace and blessings be upon him) said: "Put this (bran) back into it and knead it again."