--
The Prophet Mohammed said that there will be 12 Caliphs after me to lead the human race, and all of them will be from Quraysh. I've given you the names of the 1st three. Who do you think the rest are?
Just to add to Brother Naqvi and the sytem of the khilafat. The Quraishis plainly denied the Prophet’s nominating or willing any for his succession. The Prophet’s saying about the 'successors belonging to Quraysh' was used by Abu Bakr and Umar at the Saqifa to justify Quraysh's monopoly over the successorship of the Prophet (saww). By doing this, they sidelined the Ansar from Khilafat (who were by far more meritorious than the other clans in this affair). They promised Ansars viziership, which never really came. Banu Hashim were pushed to a corner for a reason that the Quraysh did not "like" the khilafat being in the same house as the Nabuwat!!