Is it a condition for the caliphate that the caliph be a Qurayshi?

The questioner : A different question, my lord, just a little bit.

The Shaykh : Please go ahead.

The questioner : Regarding the caliphate, is it a condition that the caliph be a Qurayshi?

The Shaykh : Yes, it is a condition.

The questioner : Is it an essential condition or a condition of preference?

The Shaykh : It is a condition if one is found, like standing in the obligatory prayer. What do you think about standing in the obligatory prayer? Is it an essential condition or a supplementary one?

The questioner : It is certainly essential.

The Shaykh : It is essential, but if one is unable to pray standing, what does he do?

The questioner : He prays sitting.

The Shaykh : Ah, and so it is with the Qurayshi.

The questioner : If one is found, he is