(2) باب وَقْتِ صَلاَةِ الْفَجْرِ
It was narrated from Abu Hurairah that:
The Messenger of Allah recited: And recite the Qur'an during the Fajr. Verily, the recitation of the Qur'an during Fajr is ever witnessed." He said: "It is witnessed by the angels of the night and the day."
Reference: Sunan Ibn Majah 670
In-book reference: Book 2, Hadith 4
English translation: Vol. 1, Book 2, Hadith 670