Musannaf Ibn Abi Shayba 27:741

Shababa ibn Sawwar narrated to us, he said: Shu'bah narrated to us, from Mu'awiyah ibn Qurrah, that he heard Anas narrating from the Prophet, may Allah bless him and grant him peace, he said: "O Allah, rectify the Ansar and the Muhajirun."