Imam Bukhari narrates: Abu al-Yaman narrated to us, he said: Shu'aib informed us from al-Zuhri, he said: Sa'id bin al-Musayyab and Abu Salamah bin Abdur Rahman informed me that Abu Hurairah, may Allāh be pleased with him, said that he heard the Messenger of Allāh ﷺ saying that
prayer in congregation is superior to the prayer of any one of you alone by twenty-five degrees, and in the Fajr prayer, the angels of the night and the angels of the day gather together. Then Abu Hurairah said: If you wish, recite this verse: Indeed, the recitation of the Qur'an at dawn is witnessed. (Bani Isra'il: )
حَدَّثَنَا أَبُو اليَمَانِ، قَالَ: أَخْبَرَنَا شُعَيْبٌ، عَنِ الزُّهْرِيِّ، قَالَ: أَخْبَرَنِي سَعِيدُ بْنُ المُسَيِّبِ، وَأَبُو سَلَمَةَ بْنُ عَبْدِ الرَّحْمَنِ، أَنَّ أَبَا هُرَيْرَةَ، قَالَ: سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ يَقُولُ: «تَفْضُلُ صَلاَةُ الجَمِيعِ صَلاَةَ أَحَدِكُمْ وَحْدَهُ، بِخَمْسٍ وَعِشْرِينَ جُزْءًا، وَتَجْتَمِعُ مَلاَئِكَةُ اللَّيْلِ وَمَلاَئِكَةُ النَّهَارِ فِي صَلاَةِ الفَجْرِ» ثُمَّ يَقُولُ أَبُو هُرَيْرَةَ: فَاقْرَءُوا إِنْ شِئْتُمْ: {إِنَّ قُرْآنَ الفَجْرِ كَانَ مَشْهُودًا} [الإسراء: 78]
Reference: Sahih Al Bukhari 648