Anas (May Allah be pleased with him) reported:
The Prophet (ﷺ) mortgaged his armour for a quantity of barley, and I took to him some barley bread and rancid fat. I heard him saying: "The family of Muhammad never possessed a measure of wheat from dawn to dusk although they were nine houses (to feed)."[Al- Bukhari].
Arabic/English book reference: Book 1, Hadith 505