Messenger of Allah said: "Whoever attends Isha (prayer) in congregation, then he has (the reward as if he had) stood half of the night. And whoever prays Isha and Fajr in congregation, then he has (the reward as if he had) spend the entire night standing (in prayer)."  

قَالَ رَسُولُ اللَّهِ ﷺ مَنْ شَهِدَ الْعِشَاءَ فِي جَمَاعَةٍ كَانَ لَهُ قِيَامُ نِصْفِ لَيْلَةٍ وَمَنْ صَلَّى الْعِشَاءَ وَالْفَجْرَ فِي جَمَاعَةٍ كَانَ لَهُ كَقِيَامِ لَيْلَةٍ قَالَ وَفِي الْبَابِ عَنِ ابْنِ عُمَرَ وَأَبِي هُرَيْرَةَ وَأَنَسٍ وَعُمَارَةَ بْنِ رُوَيْبَةَ وَجُنْدَبِ بْنِ عَبْدِ اللَّهِ بْنِ سُفْيَانَ الْبَجَلِيِّ وَأُبَىِّ بْنِ كَعْبٍ وَأَبِي مُوسَى وَبُرَيْدَةَ  

the Prophet said: "Whoever prays the Subh then he is under the protection of Allah's covenant, so do not be treacherous with Allah in his covenant."  

عَنِ النَّبِيِّ ﷺ قَالَ مَنْ صَلَّى الصُّبْحَ فَهُوَ فِي ذِمَّةِ اللَّهِ فَلاَ تُخْفِرُوا اللَّهَ فِي ذِمَّتِهِ  

the Prophet said: "Give glad tiding to those who walk to the Masajid in the dark; of a complete light on the Day of Resurrection."  

عَنِ النَّبِيِّ ﷺ قَالَ بَشِّرِ الْمَشَّائِينَ فِي الظُّلَمِ إِلَى الْمَسَاجِدِ بِالنُّورِ التَّامِّ يَوْمَ الْقِيَامَةِ