(27) Ibn Abu Khaythama narrated from Affan and Yahya bin Iss’haq as-Saylaheeni from Hammad bin Salama from Abdullah bin Uthman from Abut-Tufayl that Abdullah bin Amr had said to him: “O Abut-Tufayl, count twelve ones from bani Ka’b bin Lu’ay and then fighting and killing occur.” The traditions narrated by the Sunni concerning this subject are so many. They confirm that the Prophet (S) has mentioned twelve men to be the caliphs after him.