Narrated Abu Hurairah:
"I said: 'O Messenger of Allah, I heard from you things that I do not remember.' He said: 'Spread your cloak.' So I spread it, then he narrated many Ahadith, and I did not forget a thing that he reported to me.'" (RU)
English reference (RU): Vol. 1, Book 46, Hadith 3835 (RU)
Arabic reference (RU): Book 49, Hadith 4206 (RU)