Allah's Messenger (may peace and blessing of Allah almighty shower on him) said,'A prayer performed in congregation is twenty-five times more superior in reward to a prayer performed by a single person. The angels of the night and the angels of the day are assembled at the time of the Fajr (Morning) prayer."
Abu Huraira (may Allah almighty please with him) added, "If you wish, you can recite: 'Verily! The recitation of the Qur'an in the early dawn (Morning prayer) is ever witnessed (attended by the angels of the day and the night).' " (17.78)
- Sahih Bukhari