"By the star when it sets, Your companion (Mumammad) is neither in error, nor is he deceived, Nor does he speak out of his caprice, This is no other than inspired revelation."

[The Holy Quran Surah An-Najm, Chapter 53 and Verses 1-4]

The Arabic word Hadith(pl. Ahadith) is a narration from the life of the Prophet(P.B.U.H) and what he approved-as opposed to his life itself, which is the Sunnah. According to Muhaddithiin(Scholars of Hadith] it stand for 'what was transmitted on the authority of the Prophet, his deeds, saying, tacit approval, or description of his siffat(fatures) meaning his physical appearance. Thus Hadith literature means the literature of which consists of the narrations of the life of the Prophet and the things approved by him. However term was used sometimes in much broader sense to cover the narrations about the Companions[of the Prophet] and Successors[to the Companions] as well. The exposition of Islam in the 7th and 8th centuries confronted Islamic Scholars with a daunting task to preserve the knowledge of the Sunnah of the Prophet. Hence the science of hadith evaluation was born.