Musannaf Ibn Abi Shayba 3:5393

Abu Bakr narrated to us, he said: Waki’ narrated to us, from Abu al-Ashhab, from al-Hasan, that Abu Hurayrah met a man and said: "It is as if you are not from the people of the town." He said: "Yes." He said: "Shall I not narrate to you a hadith I heard from the Messenger of Allah, may Allah bless him and grant him peace, that you might benefit from? I heard the Messenger of Allah, may Allah bless him and grant him peace, say: 'The first thing the servant will be held accountable for is the prayer. If he completed it, [it is well], and if not, it will be said to the angels: Complete his prayer from his voluntary [prayers].'" Al-Hasan said: "And the rest of the deeds are like that."