Dear Shah Nawaz,
The only Authority in Islam is the Book of Allah, Al-Qur'an.
According to the Glorious Book, Firqa bandi or Sectarianism is SHIRK. No sect is compatible with Islam.
If a Hadith agrees with the Qur'an, the most we can say is that it MIGHT BE right.
Please read THE CRIMINALS OF ISLAM in Ourbeacon.com Library.