I was just wondering if anyone with more knowledge can shine some light about the reason why Mu'awiyah [r] wasn't considered one of the rightly guided khalifahs like Abu Bakr, Umar, Uthman, Ali, and Hasan since some scholars considered Umar bin Abdul Aziz as one of them, but not Mu'awiya.
I don't doubt the virtues of Mu'awiya, but just heard a shi'i asking this and wanted to know what is the answer.
If anyone can quote any statements from classical scholars about this that would be great.
JazakAllahu khairan.