In particular, Twelver Shi'a consider many Sunni transmitters of hadith to be unreliable because many of them took the side of Abu Bakr, Umar, Uthman and Ali instead of only Ali (and the rest of Muhammad's family) and the majority of them were narrated through certain personalities that waged war against Ahlul Bayt or sided with their enemies such as Aisha that fought Ali at Jamal, or Muawiya who did so at Siffin.
Particularly, Twelver Shi'a view many Sunni transmitters of hadith as unreliable because they often favored Abu Bakr, Umar, Uthman, and Ali over Muhammad's family alone, and most were transmitted through individuals who took the side of Ahlul Bayt's enemies or allied themselves with their foes, such as Aisha at Jamal or Muawiya at Siffin.