Musnad Ahmad 32:667

Muhammad ibn Abdullah ibn al-Zubayr narrated to us, he said: Ubaydullah—meaning Ibn Abdullah ibn Mawhab—narrated to us, he said: I heard Anas ibn Malik saying: "We used to pray a prayer with the Messenger of Allah, peace and blessings of Allah be upon him, that if one of you were to pray it today, you would criticize him for it." Sharīk ibn Muslim ibn Abī Namir said to him: "Will you not mention that to our governor?"—and the governor at that time was Umar ibn Abd al-Aziz—so he said: "I have already done so."