Full Sharh — Musnad Ahmad 386
حَدَّثَنَا عَبْدُ الرَّحْمَنِ، حَدَّثَنَا سُفْيَانُ، وَعَبْدُ الرَّزَّاقِ، قَالَا حَدَّثَنَا سُفْيَانُ، عَنْ عُثْمَانَ بْنِ حَكِيمٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي عَمْرَةَ، عَنْ عُثْمَانَ بْنِ عَفَّانَ، رَضِيَ اللَّهُ عَنْهُ قَالَ عَبْدُ الرَّزَّاقِ عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ مَنْ صَلَّى صَلَاةَ الْعِشَاءِ وَالصُّبْحِ فِي جَمَاعَةٍ فَهُوَ كَقِيَامِ لَيْلَةٍ وَقَالَ عَبْدُ الرَّحْمَنِ مَنْ صَلَّى الْعِشَاءَ فِي جَمَاعَةٍ فَهُوَ كَقِيَامِ نِصْفِ لَيْلَةٍ وَمَنْ صَلَّى الصُّبْحَ فِي جَمَاعَةٍ فَهُوَ كَقِيَامِ لَيْلَةٍ.
English Translation
It was narrated from `Uthman bin `Affan (رضي الله عنه) . `Abdur-Razzaq said:: from the Prophet (ﷺ) - that he said: `Whoever prays `Isha` and Fajr prayer in congregation, it is as if he spent the night in prayer (qiyamul-lail).” ‘Abdur-Rahman said: Whoever prays `Isha` in congregation, it is as if he spent half the night in prayer, and whoever prays Fajr in congregation, it is as if he spent the entire night in prayer,
Source
Musnad Ahmad(مسند أحمد)
Musnad Uthman ibn Affan
Hadith Number
386