Sahih Muslim
The Book Pertaining to Piety and Softening of Hearts (Kitab Al-Zuhd wa Al-Raqaiq)
Book Number: 042 / Hadith Number: 7098
Abu Hazim reported: I saw Abu Huraira point with his finger many a time and saying: By One in Whose Hand is the life of Abu Huraira, Allah's Apostle (may peace be upon him) could not eat to his fill and provide his family bread of wheat beyond three days successively until he left the world.