It is narrated from Umm al-Mu'minin Sayyida Aisha (may Allah be pleased with her), she says: The Messenger of Allah (peace and blessings be upon him) never ate his fill of barley bread for two consecutive days until he (peace and blessings be upon him) departed from this world.
Hadith Referenceشمائل ترمذي / باب ما جاء فى صفة خبز رسول الله صلى الله عليه وسلم / 148