Buddha believed Muhammad did not appoint the agent before you leave, so after he left, where parents or leader's successor after he took the duties of Muslims must choose themselves as appropriate.
Believe that the Prophet Muhammad Not appoint them before you leave. So after you're gone for a parent or leader, it is the successor of the Muslims have chosen deem appropriate.
Believe that the Prophet Muhammad Not appointed agent before you go. So after you left the parents or the place of Ye is the duty of the Muslims must pick ourselves as appropriate.