مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 630
Prayer
The Virtues of Prayer - Section 1
وَعَنْ عُثْمَانَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صلى الله عَلَيْهِ وَسلم: «مَنْ صَلَّى الْعِشَاءَ فِي جَمَاعَةٍ فَكَأَنَّمَا قَامَ نِصْفَ اللَّيْلِ وَمَنْ صَلَّى الصُّبْحَ فِي جَمَاعَةٍ فَكَأَنَّمَا صَلَّى اللَّيْل كُله» . رَوَاهُ مُسلم
‘Uthman reported God’s Messenger as saying, "If anyone prays the evening prayer in company, it is as though he had remained awake in prayer half the night; but if anyone prays the Morning Prayer in company, it is as though he had prayed the whole night.” Muslim transmitted it.
Mishkat al-Masabih, 630صَحِيح (الألباني)