Hadith are "expressed in Muhammad's words", whereas the latter are the "direct words of God". A "hadith qudsi" need not be a "sahih" (sound hadith), but may be "da‘if" or even "mawdu‘". An example of a "hadith qudsi" is the hadith of Abu Hurairah who said that Muhammad said: When God decreed the Creation He pledged Himself by writing in His book which is laid down with Him: My mercy prevails over My wrath. In the Shia school of thought, there are two fundamental viewpoints of Hadith: The Akhbari view and the Usuli view. The Usuli scholars stress the importance of
Hadith of the Twelve Successors be from the tribe of Quraysh. Interpretation of the hadith varies widely among Sunni scholars; some have openly claimed that they do not know the meaning. Another interpretation is that the prophecy was fulfilled by the Rashidun Caliphs. Some commentators, such as Ibn Kathir and Ibn Taymiyya, link this hadith with the biblical account of Moses and his twelve deputies. Imam Muslim on Sahih Muslim wrote: Rasulullah s.a.w said: "This religion (Islam) will remain standing until twelve caliph, which all of them is from Quraysh, rule over you." (Sahih Muslim) Imam Abu Dawud on Shahih Abi Dawud wrote: Masyruq said: