Musannaf Ibn Abi Shayba 28:6

Ibn ‘Ulayyah narrated to us, from Ibn Abi Najih, from Mujahid, regarding His saying: "Obey Allah and obey the Messenger and those in authority among you." He said: Mujahid used to say: "The companions of Muhammad, may Allah bless him and grant him peace." And sometimes he would say: "The people of intellect and understanding in the religion of Allah."