In Alkafi it is also mentioned that hazrat hassan r.a. and hussain r.a. made bait with ameer muawia r.a. But shia’s argument is these sahaba were hypocrite and holy prophet and hazrat Ali r.a.had to deal with them tactfully throughout thier lives.
Still shia unable follow hazrat ali r.a.
A scholar said hazrat ameer muawia started shab o satam in islamic history and shia are following it.