Musannaf Ibn Abi Shayba 6:44

'Isa ibn Yunus narrated to us, from 'Abdullah ibn Muslim, from 'Abd al-Rahman ibn Sabit, from Jabir, who said: We said, "O Messenger of Allah, how did you wake up?" He said, "In a better state than a man who did not wake up fasting and did not visit a sick person."