It is narrated from Sayyiduna Anas (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The people of innovation (bid'ah) are the worst of all creation."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from al-Awza'i except al-Mu'afa, and Muhammad bin Ammar is alone in narrating it."