The Reward of the Night Prayer
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 65
وَقَالَ اَلصَّادِقُ عَلَيْهِ اَلسَّلاَمُ: «يَقُومُ اَلنَّاسُ مِنْ فُرُشِهِمْ عَلَى ثَلاَثَةِ أَصْنَافٍ صِنْفٍ لَهُ وَ لاَ عَلَيْهِ وَ صِنْفٍ عَلَيْهِ وَ لاَ لَهُ وَ صِنْفٍ لاَ عَلَيْهِ وَ لاَ لَهُ فَأَمَّا اَلصِّنْفُ اَلَّذِي لَهُ وَ لاَ عَلَيْهِ فَيَقُومُ مِنْ مَنَامِهِ فَيَتَوَضَّأُ وَ يُصَلِّي وَ يَذْكُرُ اَللَّهَ عَزَّ وَ جَلَّ فَذَلِكَ اَلَّذِي لَهُ وَ لاَ عَلَيْهِ وَ أَمَّا اَلصِّنْفُ اَلثَّانِي فَلَمْ يَزَلْ فِي مَعْصِيَةِ اَللَّهِ عَزَّ وَ جَلَّ فَذَلِكَ اَلَّذِي عَلَيْهِ وَ لاَ لَهُ وَ أَمَّا اَلصِّنْفُ اَلثَّالِثُ فَلَمْ يَزَلْ نَائِماً حَتَّى أَصْبَحَ فَذَلِكَ اَلَّذِي لاَ عَلَيْهِ وَ لاَ لَهُ.
Imam Jafar ibn Muhammad Al-Sadiq عليه السلام said: "People rise from their beds in three categories: one for whom it is in their favour and not against them, one for whom it is against them and not in their favour, and one for whom it is neither in their favour nor against them. As for the one who is in their favour and not against them, they rise from their sleep, perform wudu (ablution), pray, and remember Allah سبحانه وتعالى, the Mighty and Majestic. This is the one for whom it is in their favour and not against them. As for the second category, they remain engaged in disobedience to Allah سبحانه وتعالى, the Mighty and Majestic; this is the one for whom it is against them and not in their favour. As for the third category, they continue sleeping until morning; this is the one for whom it is neither in their favour nor against them."
- Ṣaḥīḥ al-Faqīh