Sahih Muslim
The Book Pertaining to Piety and Softening of Hearts (Kitab Al-Zuhd wa Al-Raqaiq)
Book Number: 042 / Hadith Number: 7118
Salama b. Kuhail reported: I heard from Jundub but I did not hear him say like this:" I beard Allah's Messenger (way peace be upon him) as saying this."