Musnad Ahmad 5:10

Abdullah narrated to us, Ismail bin Ubaid bin Abi Karimah al-Harrani narrated to us, Muhammad bin Salamah narrated to us, from Abu Abd al-Rahim, from Zaid bin Abi Unaisah, from al-Zuhri, from Ali bin al-Husayn, from his father, who said: I heard Ali saying: The Messenger of Allah (peace and blessings of Allah be upon him) came to me while I and Fatimah were sleeping, and that was during the last part of the night, until he stood at the door and said: "Will you not pray?" I said, answering him: "O Messenger of Allah, our souls are 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 and did not reply to the statement. I heard him when he turned away saying, while striking his hand upon his thigh: "And man is ever, more than anything, [prone to] argument." (Al-Kahf: 54)