Musannaf Ibn Abi Shayba 3:2354

Ibn Idris narrated to us, from Hisham, from Wasil, the freed slave of Abu Uyaynah, from a man who is called Sa'd, who said: I prayed during Ramadan with the people, then I came to a house of my family and entered it, and I slept through my night, my day, and my night until the next day. Then I came to Ibn Umar and informed him. He said: "So what did you do?" He said: "I prayed Dhuhr." He said: "You did well." Then he said: "What then?" He said: "I prayed Asr." He said: "You did well." He said: "Then what?" He said: "I prayed Maghrib." He said: "Then what?" He said: "I prayed Isha." He said: "You did well." He said: "Then what?" He said: "I prayed Witr." He said: "What were you doing with the Witr?" He said: "Then what?" He said: "I prayed Subh." He said: "You did well."