Musannaf Ibn Abi Shayba 21:454

Waki’ narrated to us, Sufyan narrated to us, from ‘Abd al-‘Aziz ibn Rufay’, from Tamim ibn Tarfah al-Ta’i, from ‘Adi ibn Hatim, that a man gave a sermon in the presence of the Prophet, may Allah bless him and grant him peace, and said: "Whoever obeys Allah and His Messenger has been rightly guided, and whoever disobeys them has gone astray." The Messenger of Allah said: "You are a bad speaker. Say: 'And whoever disobeys Allah and His Messenger.'"