Sahih Muslim
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-Fadail Al-Sahabah)
Book Number: 031 / Hadith Number: 5922
This hadith has been transmitted on the authority of Abu Hayyan but with this addition:" The Book of Allah contains right guidance, the light, and whoever adheres to it and holds it fast, he is upon right guidance and whosoever deviates from it goes astray.