The Quran And The Sunnah Is Necessary
"And if ye have a dispute concerning a matter, refer it to Allah and the messenger if ye are (in truth) believers in Allah and the Last Day." (IV: 59)
It is known from the above verses that in their mutual disputes the Muslims should make the Quran and the Sunnah their arbitrators and then whatever is decided it should be acknowledged sincerely i.e. there should be no grievance. Should one feel torment, then one should diagnose one's disease; that there is weakness in faith and certitude, and there is still a taint of sensualism, for this is a sign of hypocrisy. As such, the divine statement regarding the Hypocrites is as under: -
"Hast thou not seen those who pretend that they believe in that which is revealed unto thee and that which was revealed before thee, how they would go for judgement (in their disputes) to false deities when they have been ordered to reject them? Satan would mislead them far astray. And when it is said unto them: Come unto that which Allah hath revealed and unto the messenger, thou seest the hypocrites turn from thee with aversion. How would it be if a misfortune smote them because of that which their own hands sent before (them)? Then would they come unto thee, swearing by Allah that they were seeking naught but harmony and kindness. Those are they, the secrets of whose hearts Allah knoweth. So oppose them and admonish them, and address them in plain terms about their souls." (IV: 60-63).
In these verses Allah Most High has falsified
the claim of those people who orally admit that they believe in all the
former Books and the Quran but when they have to ascertain a problem or
have to remove a dissent or have to decide a quarrel, they do not refer
to the Book and the Sunnah but rather resort to other things. These verses
have in fact been revealed regarding two men who had had a dissension.
One was a Jew and the other a Muslim. The Jew was insisting upon going
to the Holy Prophet 
whereas the Muslim wanted to take him to K'ab bin Ashraf (a prosperous
and powerful Jew). It is also said that these verses have been revealed
regarding those Hypocrites who used to make a show of Islam but covertly
they wished to incline towards Ignorance. Besides this, there are two other
interpretative statements also. However, the verse, as regards its order
and words, is common and covers all those events; it expresses the censure
for and evil of every man who, desisting from the Quran and the Sunnah,
goes towards falsehood for decision.
