According to the terms of the treaty of Hudaibiya, the Arab tribes had the option to be allied with the Quraish or the Muslims. In pursuance of this option, the Banu Bakr joined the Quraish, and their enemies the Banu Khuza'ah allied themselves with the Muslims. Incited by the Quraish, the Banu Bakr attacked the Khuza'ah, looted their property and killed their men. Even when the Banu Khuza'ah sought the sanctuary of the Kaaba, they were chased and put to death. The Banu Khuza'ah sent a deputation to Madina, and wanted the Muslims to come to their aid according to the terms of their treaty with them. The Holy Prophet assured the Banu Khaza'ah that the Muslims would fulfil their obligation to them. The Holy Prophet thereupon sent a message to the Quraish making three alternative demands. The first alternative was that the Banu Bakr and the Quraish should pay blood money for the victims of Banu Khuza'ah. The second alternative was that the Quraish should terminate their alliance with Banu Bakr. The third alternative was that the treaty of Hudaibiya should be considered to have been abrogated. In a fit of arrogance, the Quraish replied that they would neither pay blood money, nor terminate their alliance with Banu Bakr, and that in the circumstances they were prepared to consider that the Hadaibiya pact had been abrogated.