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."
عَنْ رَسُولِ اللَّهِ ﷺ {وَقُرْآنَ الْفَجْرِ إِنَّ قُرْآنَ الْفَجْرِ كَانَ مَشْهُودًا} قَالَ تَشْهَدُهُ مَلاَئِكَةُ اللَّيْلِ وَالنَّهَارِ