Chapter on Causes Requiring Purification
Tahdhīb al-Aḥkām|Volume 1|Book 1|Chapter 1
فَأَمَّا مَا رَوَاهُ مُحَمَّدُ بْنُ عَلِيِّ بْنِ مَحْبُوبٍ عَنِ اَلْعَبَّاسِ عَنْ مُحَمَّدِ بْنِ إِسْمَاعِيلَ عَنْ مُحَمَّدِ بْنِ عُذَافِرٍ عَنْ عَبْدِ اَللَّهِ بْنِ سِنَانٍ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ: فِي اَلرَّجُلِ هَلْ يُنْقَضُ وُضُوؤُهُ إِذَا نَامَ وَ هُوَ جَالِسٌ قَالَ« إِنْ كَانَ يَوْمَ اَلْجُمُعَةِ فِي اَلْمَسْجِدِ فَلاَ وُضُوءَ عَلَيْهِ وَ ذَلِكَ أَنَّهُ فِي حَالِ ضَرُورَةٍ».
As for what Muhammad bin ‘Ali bin Mahbub narrated, from Al-‘Abbas, from Muhammad bin Isma‘il, from Muhammad bin ‘Udhafir, from Abdullah bin Sinan, from Abu Abdullah عليه السلام:
(I asked) concerning a man, does his ablution (wudu’) break if he sleeps while sitting? Imam عليه السلام said: "If it is on Friday in the mosque, then he does not need to perform ablution, because it is a situation of necessity."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 8
- Ṣaḥīḥ al-Tahdhīb