'Aayeshah Radiyallahu 'Anha says:
"Rasulullah Sallallahu 'Alayhi Wasallam never filled his stomach with bread made of barley for two consecutive days till he passed away". (RU)
English reference (RU): Book 24, Hadith 141 (RU)
Arabic reference (RU): Book 25, Hadith 149 (RU)