Sahih Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Volume: 005 / Book Number: 059 / Hadith Number: 381
Narrated Jabir:
This Verse: "When two of your parties almost Decided to fall away..." was revealed in our connection, i.e. Bani Salama and Bani Haritha and I would not have liked that, if it was not revealed, for Allah said:-- But Allah was their Protector.....(3.122)