It is wrong to say that sufi's are a sect as they have no specific fiqh or madhab but either follow the madhabs of the four orthodox schools of Sunni's (Shafi, Malaki, Hanbali, Hanafi), nor do they have a particular aqida but follow one of the two Orthodox Sunni's (Ashari, Maturudi). Now there are different schools of Sufism known as tariqas (Ba'alawi, Qadariyya, Salaxiya, Naqshibandi, Shadhili, Tijani etc), but that does not signify any change in the muslims Islamic Sharia or Aqida.
So how can they be conisdered a new sect or a particular sect other than Sunni?
So, what are the differences between these groups if they all believe the same things. Do tell.




