Making up the Night Prayer
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 76
وَ رُوِيَ عَنْ مُرَازِمِ بْنِ حَكِيمٍ اَلْأَزْدِيِّ أَنَّهُ قَالَ: كُنْتُ مَرِضْتُ أَرْبَعَةَ أَشْهُرٍ لَمْ أُصَلِّ نَافِلَةً فِيهَا فَقُلْتُ لِأَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ إِنِّي مَرِضْتُ أَرْبَعَةَ أَشْهُرٍ لَمْ أُصَلِّ نَافِلَةً فَقَالَ «لَيْسَ عَلَيْكَ قَضَاءٌ إِنَّ اَلْمَرِيضَ لَيْسَ كَالصَّحِيحِ كُلُّ مَا غَلَبَ اَللَّهُ عَلَيْهِ فَاللَّهُ أَوْلَى بِالْعُذْرِ فِيهِ.
Murazim ibn Hakim al-Azdi narrated that He said: "I was ill for four months and did not perform any of the supererogatory (nafilah) prayers during that time. I mentioned this to Imam Jafar ibn Muhammad Al-Sadiq عليه السلام Imam عليه السلام said: 'There is no obligation on you to make them up; indeed, the condition of the sick is not like that of the healthy. Whatever overwhelms you, Allah سبحانه وتعالى is more deserving of offering an excuse for it.'".
- Ṣaḥīḥ al-Faqīh, p. 71