Musnad Ahmad 855:6

'Abd al-Samad narrated to us, Yazid—meaning Ibn Ibrahim—narrated to us, he said: I asked Muhammad about the hadith of 'Imran ibn Husayn. He said: I was informed that 'Imran ibn Husayn said to al-Hakam al-Ghifari—and both of them were companions of the Messenger of Allah, may Allah bless him and grant him peace—"Do you know the day the Messenger of Allah, may Allah bless him and grant him peace, said: 'There is no obedience in disobedience to Allah'?" He said: "Yes." 'Imran said: "Allah is the Greatest, Allah is the Greatest."