Sahih Bukhari Volume 5, Book 58, Hadith Number 221.

Narated By Abu Huraira : Allah’s Apostle, 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 i.e. to be loyal to heathenism, by boycotting Banu Hashim, the Prophet’s folk, See Hadith No. 659 Vol. 2).