Abu Umaamah Al-Baahili Radiyallahu 'Anhu says:
"Bread made of barley was never left over in the house of Rasulullah Sallallahu 'Alayhi Wasallam". (FR)
English reference (FR): Book 24, Hadith 136 (FR)
Arabic reference (FR): Book 25, Hadith 144 (FR)