The ruling on one who denies a Qur'anic verse or a Prophetic hadith

Question:
One of the scholars mentioned on a radio program that one who denies a verse from the Noble Qur'an is a disbeliever, but one who does not believe a hadith, or denies it, is not a disbeliever. What is your opinion, Your Eminence, with evidence?

Answer:
As for the verses, there is no doubt that one who denies them is a disbeliever. One who denies the Qur'an, or part of the Qur'an, is a disbeliever by the consensus of the Muslims, because it is certain that it is the speech of Allah.
As for the hadith, there is a distinction. The established hadiths in which there is no doubt or defect: one who denies them is a disbeliever according to all scholars. As for the hadiths in which there is disagreement and scrutiny, this is a matter of scrutiny; its holder is not declared a disbeliever.
The general statement that one who denies a hadith is not a disbeliever is a defective statement; it is not permissible in its generality. Rather, there is a distinction. One who denies the authentic, well-known hadiths of the Prophet (peace and blessings be upon him) is a disbeliever. Likewise, one who denies the Sunnah and says, "The Sunnah is not used as evidence, and the Qur'an is sufficient," is a disbeliever. We seek refuge in Allah.
Allah gave the Prophet the Qur'an, and the like of it with him. But some of the hadiths in which there is doubt, due to the non-rectitude of their chains of narration, or scrutiny in some of their chains, or such, this is the matter of scrutiny.