I saw Abu Hurairah pointing with his finger repeatedly, saying, "By the One in whose hand is the soul of Abu Hurairah, the Prophet of Allah ﷺ and his family never ate their fill of wheat bread for three consecutive days until he departed this world."
حدثنا يحيى بن سعيد عن يزيد بن كيسان قال
رأيت أبا هريرة يشير بأصبعه مرارا والذي نفس أبي هريرة بيده ما شبع نبي الله ﷺ وأهله ثلاثة أيام تباعا من خبز حنطة حتى فارق الدنيا
Its isnad is sahih, Muslim narrated it 4/2284 no. 2976, in the Book of Asceticism, on the Prophet's asceticism ﷺ, and Bayhaqi 7/46–47, in the Book of Marriage, on what Allah commanded him regarding choosing the Hereafter.