It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: The angels of the night and the angels of the day gather at the times of Fajr and Asr prayers. Then those angels who have stayed among you during the night ascend to the heavens at the time of Fajr, and in the same way, they gather at the time of Asr, so the angels of the day ascend to the heavens and the angels of the night remain. Allah Almighty, although He knows everything, asks them: In what condition did you leave My servants? They say: When we left them, they were praying, and when we came to them, they were praying.