Hadith are such an integral part of traditional Islam in all its variations, that when someone suggests that the Qur’an alone should serve as the source of religious law and guidance for Muslims, the idea is usually met with shock and amazement. So, those who advocate following the Qur’an alone must address the issue of hadith.
The Arabic word "hadith," means a story, or saying. Any story, or saying, from anyone. For traditional Muslims, it has come to mean specifically a story or saying told about, or attributed to the prophet Muhammad.