Question:
What do you say about the people who deny the Hadiths of the Messenger (peace be upon him)?
Answer:
The Sunnah (acts, sayings or approvals of the Prophet) is the second source of the Shari`ah (Islamic law) after the Qur’an according to the Statement of Allah (Exalted be He): “And whatsoever the Messenger (Muhammad صلى الله عليه وسلم) gives you, take it; and whatsoever he forbids you, abstain (from it).” [al-Hashr: 7]
“He who obeys the Messenger (Muhammad صلى الله عليه وسلم), has indeed obeyed Allâh” [al-Nisa: 80]
All Muslim scholars agree by Ijma’ (consensus of scholars) on the obligation of acting upon the Sunnah. As for the person who denies acting upon the Sunnah, they are considered a Kafir (disbeliever) because they deny Allah and His Messenger and the Ijma’ of Muslim scholars.