Vai, you should discuss with mozammel huzur about muabia. Muabia became Muslim after mekka bijou where as hazrat ali was senior most sahabi and member of Asmara e mubashara. So muabia did great mistake to disobey hazrat ali. Even he gave lanot hazrat ali in Zuma khutba. If had he good Muslim he would give khelafot hazrat Hussain or others pious men. About hazrat Amman rasul sa addressed muabua as bagi or rebel.