The Messenger of Allah ﷺ said, "Angels take turns watching over you by night and by day, and they gather together at the time of the Asr prayer and the Fajr prayer. Then those who spent the night among you ascend, and Allah asks them, though He knows best concerning them, 'How did you leave My servants?' They reply, 'We left them while they were praying, and we came to them while they were praying.'"
قال رسول الله ﷺ: يتعاقبون فيكم ملائكة بالليل وملائكة بالنهار، ويجتمعون في صلاة العصر، وصلاة الفجر. ثم يعرج الذين باتوا فيكم، فيسألهم- وهو أعلم بهم-: كيف تركتم عبادي؟ فيقولون: تركناهم وهم يصلون، وأتيناهم وهم يصلون.
Malik narrated it in Qasr al-Salah (82) from Abu Zinad, from Aaraj, from Abu Hurairah, and he mentioned the hadith.Bukhari narrated it in al-Mawaqit (555) from Abdullah bin Yusuf, and Muslim narrated it in al-Masajid (632) from Yahya bin Yahya, both of them from Malik, with the same chain, similarly.