The following is a typical assertion in conventional Muslim thought regarding the one who does not accept the jurisdiction of the supposed Sunnah, hadith corpus or both
(attributed to Prophet Muhammad peace be upon him):
All the Ayaat cited above establish and confirm the Sunnah, i.e. that all the sayings and actions of the
Messenger (s.a.w) are divine revelation from Allah.
They confirm and establish the obligation of taking the Sunnah of the Messenger (s.a.w), whether
they are his (s.a.w) statements or deeds, and the obligation of adhering to them in all affairs of life. All these Ayaat are definite in meaning and authenticity.
Therefore, rejecting the legitimacy of the Sunnah of the Messenger (s.aw), his
actions and sayings, and considering them as an
invalid source for Ahkaam whilst accepting the Quran alone is deemed an open disbelief (kufr suraah).
Restricting oneself to taking the Quran
and refusing to take what has been mentioned in the noble Sunnah is also an open kufr (kufr suraah). It is the view of the enemies of Islam who have worked and are still working to destroy Islam and remove it from existence.
This is because it is considered a rejection of the Ayaat that are definite in meaning and authenticity that prove the Sunnah of the Messenger (s.a.w) is just like the obligation
of following the Qur’an. Holding this view is undoubtedly belief in a part of the Book and rejection of a part. Allah (s.w.t) says:
do you believe in a part of the Scripture and reject the rest? Then what is the recompenses of those who do so among you except disgrace in the life of this world, and on the Day of Resurrection they shall be consigned to the grievous torment. [TMQ al-Baqarah: 85]
In other words, if one does not accept the traditionalist’s interpretation of the verses supposedly in support of their viewpoint on the Sunnah. One’s faith
(iman) in God, the Quran, the Messengers and angels; the last Day and doing righteous deeds is practically of no or little relevance, to say the least (in the traditionalist worldview), and moreover, one is aspersed as a disbeliever or an apostate.
God warns against Takfir (excommunication) - declaring a believer as a non-Muslim or disbeliever: Believers, when you go forth in the cause
of God, make due investigation and do not say to those who offer you the greeting of peace, You are no believer! because you seek the good things of this life. With God there are good things in plenty. You yourself were in the same position before, but God
conferred His special favour on you. Therefore, take care to investigate. Surely God is well-aware of what you do. (4:94) Nevertheless, there is no warrant in the Quran for such a worldview. There is no unequivocal proof for such a fundamental notion
of the ‘Sunnah’ (as would be expected to be found) in the Quran. And We had certainly brought them a Book which We detailed by knowledge - as guidance and mercy to a people who believe. (7:52)
Moreover, Believers or Muslims ought to verify and investigate the ‘knowledge’ they receive: Do not follow what you have no ˹sure˺
knowledge of. Indeed, all will be called to account for ˹their˺ hearing, sight, and heart [intellect]. (17:36).
In actuality, what is being dismissed
is mere human interpretation of the Ayaat and not the verses (Ayaat) of God [as asserted above], thus the accusation of kufr is baseless since there is no authority to rank with God [9:31]. Nor is there any question of authority
of the messenger-ship of Prophet Muhammad (peace be upon him) [4:64-65]. Rather, the Quran is conclusive evidence for the prophethood (or messenger-ship) of Muhammad (peace be upon him) and not contrariwise [4:174]. The irony is that,
following and applying the Quran in daily life is adhering to the very ‘sunnah’ of the Prophet (peace be upon him) that is sought after, but by and large overlooked by the traditionalist. And the Messenger will say,
O my Lord! My people did indeed treat this Quran as a thing abandoned (25:30).
A believer or Muslim ought to be loyal to God and His message above any
religion, denomination, school of thought, constitution, institution, sciences or scholars; despite the status quo and any prestige status ascribed to the chieftains and dignitaries of respective communities.
Here it is worth to take heed of the attitude of those who spurn God’s guidance:
will say, “Our Lord! We obeyed our leaders and elite, but they led us astray from the ˹Right˺ Way. (33:67)
But when it is
said to them, ‘Follow the message that God has sent down,’ they answer, ‘We follow the ways of our fathers.’ What! Even though their fathers understood nothing and were not guided? (2:170)
And God knows best.
 1 An-Najam:3-4, Al-Anbiyaa:45, Saad:70, Al-Ahqaaf:9, Al-Hasr:7, An-Nisaa:80, An-
Nur:63, Al-Ahzaab;36, An-Nisaa:65, An-Nisaa:59, Aali-‘Imraan:31, An- Nahl:44