The Hadith is the record of the sayings of Prophet Muhammad (pbuh). The sayings and conduct of Prophet Muhammad (pbuh) constitute the Sunnah.
The Hadith has come to supplement the Holy Quran as a source of the Islamic religious law. The Hadith is the second pillar after the Quran upon which every Muslim rests his faith. Hadith consists of Mat'n and Isnad. Mat'n means the text of the Hadith, while Isnad means the chain of transmitters to that Hadith.