What is the ruling on one who calls himself a Quranist and does not cite anything in his religion except verses from the Qur'an?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: I saw a man who appears righteous, is religious, and has memorized the Qur'an. When I spoke to him about the Sunnah and the hadiths, he said, "I am a Quranist," and he cites only Quranic verses. Is he one of the people of deviation who do not follow the Sunnah?

Answer:
This is between two possibilities: either he is ignorant and took this idea from others, thinking it is correct. In that case, he is excused until it is clarified to him. He is excused until it is clarified to him. If he persists, he is ruled to be a disbeliever because he is denying the Messenger (peace and blessings be upon him). Or he is doing this intentionally, deliberately making this statement, knowing that it is misguidance and that it is wrong, and doing it on purpose. This one is a disbeliever without doubt because he is intentionally attacking the hadiths of the Messenger (peace and blessings be upon him) and denying the Messenger (peace and blessings be upon him). This is denying the Messenger. Yes.