Banu Bakr
The treaty was set to expire after 10 years, but was broken after only 10 months. According to the terms of the treaty of Hudaybiyyah, the Arab tribes were given the option to join either of the parties, the Muslims or Quraish. Should any of these tribes face aggression, the party to which it was allied would have the right to retaliate. As a consequence, Banu Bakr joined Quraish, and the Banu Khuza‘ah joined Muhammed. Banu Bakr attacked Banu Khuza'ah at al-Wateer in Sha'baan 8 AH and it was revealed that the Quraish helped Banu Bakr with men and arms taking advantage of the cover of the night. Pressed by their enemies, the tribesmen of Khuza‘ah sought the Holy Sanctuary, but here too, their lives were not spared, and Nawfal, the chief of Banu Bakr, chasing them in the sanctified area, massacred his adversaries.