Reference: Hilyatul-Awliyaa. – Volume 3, Page 364
al-Jaami’ lil-Khateeb – Volume 2, Page 264
al-Hath ‘alaa Talabil-‘Ilm – Page 55
al-Hifth – Ahammiyyatuhu, ‘Ajaa.ibuhu, Tareeqatuhu, Asbaabuhu – Page 15
Muhammad ibn Muslim az-Zuhree (died 125AH) narrated:
I have never revised a hadeeth, and nor have I ever had any doubt in [the memorisation of] a hadeeth, except one hadeeth; and when I questioned my colleague about it, [I found] it was [exactly] as I had memorised [it].