The Book Pertaining to the Merits of the Companions (Allah Be Pleased With Them) of the Holy Prophet (May Peace Be Upon Him) (Kitab Al-Fada'il Al-Sahabah)
Muslim :: Book 31 : Hadith 6083
Al-A'raj reported that he heard Abu Huraira as saying: You are under the impression that Abu Huraira transmits so many ahadith from Allah's Messenger (may peace up upon him) ; (bear in mind) Allah is the great Reckoner. I was a poor man and I served Allah's Messenger (may peace be upon him) being satisfied with bare subsistence, whereas the immigrants remained busy with transactions in the bazar; while the Ansar had been engaged in looking after their properties. (He further reported) that Allah's Messenger (may peace be upon him) said: He who spreads the cloth would not forget anything that he would hear from me. I spread my cloth until he narrated something. I then pressed it against my (chest), so I never forgot anything that I heard from him.