From Sahih Bukhari (Hadith 4678):
Narrated `Abdullah bin Ka`b:I heard Ka`b bin Malik talking about the story of the battle of Tabuk when he remained behind, "By Allah, I do not know anyone whom Allah has helped for telling the truth more than me since I mentioned that truth to Allah's Messenger (ﷺ) till today, I have never intended to tell a lie. And Allah revealed to His Apostle: "Verily! Allah has forgiven the Prophet, the Muhajirin............ and be with those who are true (in words and deeds)." (9.117-119) (See Hadith No. 702 Vol)
Reference: Bukhari 4678