Volume 7 · Book 65 · Hadith 325
Narrated Abu Huraira: that he passed by a group of people in front of whom there was a roasted sheep. They invited him but he refused to eat and said, "Allah's Apostle left this world without satisfying his hunger even with barley bread."
— Sahih Bukhari, Volume 7, Book 65: Food, Meals, Hadith #325