Sahih Muslim
The Book of Faith (Kitab Al-Iman)
Book Number: 001 / Hadith Number: 97
Zuhair b. Harb said: Jarir reported on the authority of A'mash with this chain of transmitters that the Messenger of Allah (may peace be upon him) observed: By him in Whose hand is my life, you shall not enter Paradise unless you believe. The rest of the hadith is the same as narrated by Abd Mu'awiya and Waki'.