This caused them to believe that Uthman had been killed by the people of the Quraysh .
The Quraysh caused Uthman to stay longer in Mecca than they originally planned and refused to inform the Muslims of his whereabouts .
This caused Quraysh to believe that Uthman had been killed by the people of the Quraysh .
The Quraysh caused Uthman to stay longer in Mecca than they originally planned and refused to inform the Muslims of his whereabouts .