Musannaf Ibn Abi Shaybah

Hazrat Jubair bin Katheer Hadhrami narrates that Hazrat Umm al-Darda sent him to Naufal bin Fulan, who was sitting in the mosque with a preacher, giving admonition and advice. She said: Tell both of them to fear Allah. And their admonition and advice to people should be for their own selves.