Sunnah And Hadees
In The Quran Explicitly, Allah orders the Prophet to Follow the Sunnat of Prophet Ibraheem. This Sunnat of Salat, Roza, Zakat and Hajj was the Sunnat of Ibraheem and all the Prophets after him… Even Before the Prophet Ibraheem all Prophets used to offer Salat, pay Zakat and observe fasting etc as stated in the Quran. The Preservation of Sunnat is similar to the Quran which reached us through consensus of Ummat & Mass Transmissions within generations over time. There is a Possibility of innovation in almost every aspect of deen and that can be checked and verified by comparing with the Actions and Consensus of the Ummat…On the other hand, There is is no such Consensus on Hadith Books or Muhadiseen let alone on a Sahi Hadith…. The Shia Reject the Muhadiseen and their books & the ahadith in them, belonging to Sunni School, Imam Bukhari , Muslim etc…They have their own Muhadiseen and Hadith Books..Al Kafi etc Also the Criteria for Judging the Hadith as Sahi is entirely different in Shia School as compared to Sunni School. The Doubts on Sunnat can be cleared by comparison with the Consensus of Ummat similar to the Quran.. God knows Best!