According to Quran and traditions, the Muslims who fought the Hujjah (Imam) of the era are worse than disbelievers.
Imam Muhammad Baqir (a.s.) while discussing those who fought Ali (a.s.) – Know that they are greater criminals than those who fought the Holy Prophet (s.a.w.a.).
He (a.s.) was asked – How is that O Son of Allah’s Prophet?
He (a.s.) informed – They were the people from the era of ignorance (Jahiliyyah) while these ones recited the Quran and they recognized the people of merit then they did what they did despite the knowledge.
- Mustadrak al-Wasail v 11 p 62, 66v
- Manaqib Aal Abi Talib (a.s.) v 3 p 218
- Behaar al-Anwaar v 32 p 322