Musnad Ahmad 5:143

Ya'qub narrated to us, my father narrated to us, from Ibn Ishaq, Hakim ibn Hakim ibn 'Abbad ibn Hunayf narrated to me, from Muhammad ibn Muslim ibn 'Ubayd Allah ibn Shihab, from 'Ali ibn al-Husayn, from his father, from his grandfather 'Ali ibn Abi Talib, who said: The Messenger of Allah (peace and blessings of Allah be upon him) entered upon me and Fatimah at night, and he woke us up for prayer. He said: Then he returned to his house and prayed for a portion of the night. He said: He did not hear any sound from us. He said: So he returned to us and woke us up and said: "Get up and pray." He said: So I sat up while I was rubbing my eyes, and I said: "By Allah, we do not pray except what has been written for us. Our souls are only in the hand of Allah; if He wills to awaken us, He will awaken us." He said: The Messenger of Allah (peace and blessings of Allah be upon him) turned away while he was saying, and striking his hand upon his thigh: "We do not pray except what has been written for us, we do not pray except what has been written for us," {And man is, of all things, most argumentative}.