Is is a question about what they help the criminal to do or whether the statement is true?
The statement is true: an accomplice does help a criminal, and does so knowingly. Together, they commit a crime or wrongdoing (in case what they do is immoral but not illegal).
One believes that the prophet Muhammad’s nephew and son in law,Ali was chosen by Muhammad to be their new leader after Muhammad’s death but the other division believes that Abu Bakr who was a follower of Muhammad was the one chosen by Muhammad to be the new leader