Abu Ishaq al-Sabay'ai' أبو إسحاق السبيعي عمرو بن عبد الله · The Book of Salah

"Prayer in congregation is twenty-five times more virtuous than the prayer of any one of you offered on his own. The angels of the night and the day meet at Fajr prayer. Recite if you wish: Verily, the recitation of the Qur'an in the early dawn is ever witnessed." Al-Isra' 17:78.

"I heard the Messenger of Allah (ﷺ) say: 'No one will enter the Fire who prays before the sun rises and before it sets.'"