English Translation
Narrated Abu Huraira: On the Day of Nahr at Mina, the Prophet said, "Tomorrow we shall stay at Khaif Bani Kinana where the pagans had taken the oath of Kufr (heathenism)." He meant (by that place) Al-Muhassab where the Quraish tribe and Bani Kinana concluded a contract against Bani Hashim and Bani 'Abdul-Muttalib or Bani Al-Muttalib that they would not intermarry with them or deal with them in business until they handed over the Prophet to them.
This hadith is from Sahih al-Bukhari, the most rigorously authenticated collection in Islamic scholarship. No editorial opinion is added.