The Ruling on One Who Denies the Sunnah

Question:
The last question says: What is your opinion, Honorable Shaykh, regarding a person who completely denies the Sunnah, yet he performs the prayer, fasts, and does other acts of obedience? And when he is discussed on a legal issue, he says, "Bring me evidence from the Qur'an." It is not hidden from you that there are issues for which there is no explicit text in the Qur'an regarding their evaluation or permissibility. Please guide us on the best way to convince him? The one who denies the Sunnah, if he is

Answer:
among the common people, or among those who are feared to fall into this, then he is misguided; he is a misguiding one. He should be guided, admonished, and it should be explained to him. But if he is among the people of knowledge and he denies the Sunnah, then that is disbelief; that is disbelief in Allah the Exalted and Majestic, because he has denied the second source of the sources of the Shari'ah. The first source is the Book of Allah the Exalted and Majestic, the second source is the hadith of the Messenger of Allah (peace and blessings be upon him), the Sunnah of the Messenger of Allah (peace and blessings be upon him), the third source is the consensus of the Muslims, what the Muslims have agreed upon. The fourth source is analogical reasoning (qiyas), and there is disagreement among the people of knowledge regarding this, and among the rest as well. But the important thing is that the Sunnah is the second source after the Book of Allah. So whoever denies it intentionally for the sake of denying it is a disbeliever, because Allah the Exalted says: This one says, "No, from what the Messenger has given me?" This means he is disobedient to Allah, a liar to Allah and His Messenger, and to the consensus of the Muslims. It is obligatory to take the Sunnah of the Messenger if it is authentic, by the indication of the Book of Allah, the Sunnah of the Messenger of Allah, and the consensus of the Muslims. And whoever denies the Sunnah intentionally while he knows it; then he is a disbeliever; because he is a liar to Allah and His Messenger and to the consensus of the Muslims. But if he is ignorant, then the ignorant one is guided, taught, and it is explained to him. And Allah the Exalted commanded us to take the Sunnah as we take the Qur'an, , the Book is the Qur'an and the wisdom is the Sunnah of the Messenger of Allah (peace and blessings be upon him). And also And the Prophet (peace and blessings be upon him) said, "I was given the Qur'an and its like with it. I was given the Qur'an and its like with it." And he informed (peace and blessings be upon him) that in the last of times a person will come, leaning on his couch, saying, "Between us and you is the Book of Allah; what it has made lawful we have made lawful, and what it has forbidden we have forbidden." Meaning, he associates with us, meaning he says, "Except by the Book of Allah." The Messenger (peace and blessings be upon him) informed about this, then he said, may Allah's prayers and blessings be upon him, "Beware, I was given the Qur'an." He said, "And I was given its like." Yes. Allah the Exalted says in praising His Prophet (peace and blessings be upon him): He does not bring anything from himself (peace and blessings be upon him). And the Sunnah is the second revelation after the great Qur'an. Yes.