Hadith remembers God unceasingly. (Al-Ahzab 33: 21) The hadith literature is based on spoken reports in circulation after the death of Muhammad. Unlike the Qur'an, ahadith were not promptly written down during Muhammad's life or immediately after his death. Hadith were evaluated and gathered into large collections during the 8th and 9th centuries, generations after the death of Muhammad, after the end of the era of the "rightful" Rashidun Caliphate, over from where Muhammad lived. "Many thousands of times" more numerous than Quranic verse, ahadith have been described as resembling layers surrounding the “core” of the Islamic belief (the Quran). Well-known,
Hadith of Golden Chain Hadith Qudsi, i.e., the word of God, but differs from Quran. The Gabriel transmitted hadith from God to prophet. Al-Silsilah al-Dhahab is Mutawatir. Shia and sunni scholars have narrated the hadith by Different expressions with authenticity. This hadith is Musalsal meaning that it's a word of God and is conveyed from Prophet of Islam through Ahl al-Bayt to Ali al-Ridha. In other word, narrators of the hadith are Prophet and Ahl al-Bayt. According to shia view they are infallible and immune from error in practical matters, in inviting people to the religion and in perceiving the realm of cognition. because