Gharib
I want Khilafah back
Quran just talks about the sunnah of Allah(c.c) , not Muhammad (sav)
33:38 There is no blame on the prophet in doing anything that God has decreed upon him. Such was God's sunnah with the people of old. God's command is a determined duty.
48:23 Such is God's sunna with those who have passed away before, and you will not find any change in God's sunnah.
So what about these verses:
Say: "obey Allah and the messenger." But if they turn away, then Allah does not like the disbelievers .
(Aal-e-Imran, Chapter #3, Verse #32)
And obey Allah and the messenger that you may obtain mercy.
(Aal-e-Imran, Chapter #3, Verse #132)
On that day those who disbelieved and disobeyed the messenger will wish that they were buried in the earth, but they will never be able to hide a single fact from Allah.
(An-Nisa, Chapter #4, Verse #42)
O you who believe! obey Allah and obey the messenger, and those of you (Muslims) who are in authority. (And) if you differ in anything amongst yourselves, refer it to Allah and His messenger, if you believe in Allah and in the Last Day. That is better and more suitable for final determination.
(An-Nisa, Chapter #4, Verse #59)
Note, this last verse doesn't address the sahaba specifically and telling them only them to refer their matters to the messenger so long as he is alive, it says in general terms refer to the messenger which applies long after he is dead.