Sahih al-Bukhari — Merits of the Helpers in Madinah (Ansaar) — Hadith No: 3882
Translation
Narrated Abu Huraira:Allah's Messenger (ﷺ), while going out for the battle of Hunain, said, "Tomorrow Allah willing, we will encamp at Khaif Bani Kinana where the pagans(of Quraish) took the oath of Kufr (against the Prophet (ﷺ) i.e. to be loyal to heathenism, by boycotting Banu Hashim, the Prophet's folk. (See Hadith)