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: 6089
Jabir reported that a slave of Hatib came to Allah's Messenger (may peace be upon him) complaining against Hatib and said: Hatib will definitely go to Hell. (But) Allah's Messenger (may peace be upon him) said: You tell a lie; he would not get into that for he had taken part in Badr and in (the expedition of) Hudaibiya.