This day I have perfected your religion for you, completed my favour upon you, and have chosen for you Islam as your religion.. [5:3]

O you who believe! Obey All�h and obey the Messenger (Muhammad (saws)), and those of you (Muslims) who are in authority. (And) if you differ in anything amongst yourselves, refer it to All�h and His Messenger (saws), if you believe in All�h and in the Last Day. That is better and more suitable for final determination. [4:59]